From 352fb0971d3718985ab00d8d2e400d87d9d50d49 Mon Sep 17 00:00:00 2001
From: yangtengze <yangtengze@163.com>
Date: Sun, 21 May 2023 16:44:25 +0800
Subject: [PATCH] 1

---
 graph/readData.drawio.svg | 62 ++++++++++++-------------
 graph/saveData.drawio.svg | 97 +++++++++++++++++++--------------------
 2 files changed, 78 insertions(+), 81 deletions(-)

diff --git a/graph/readData.drawio.svg b/graph/readData.drawio.svg
index b6de3dd..75b19ce 100644
--- a/graph/readData.drawio.svg
+++ b/graph/readData.drawio.svg
@@ -1,92 +1,92 @@
-<svg host="65bd71144e" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="281px" height="431px" viewBox="-0.5 -0.5 281 431" content="&lt;mxfile&gt;&lt;diagram id=&quot;ZZavjm4HpK4xC4EOIo5s&quot; name=&quot;第 1 页&quot;&gt;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&lt;/diagram&gt;&lt;/mxfile&gt;">
+<svg host="65bd71144e" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="321px" height="466px" viewBox="-0.5 -0.5 321 466" content="&lt;mxfile&gt;&lt;diagram id=&quot;ZZavjm4HpK4xC4EOIo5s&quot; name=&quot;第 1 页&quot;&gt;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&lt;/diagram&gt;&lt;/mxfile&gt;">
     <defs/>
     <g>
-        <path d="M 85 0 L 140 40 L 85 80 L 30 40 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 70 110 L 70 60" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 70 260 L 70 170" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <rect x="10" y="260" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 108px; height: 1px; padding-top: 40px; margin-left: 31px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 290px; margin-left: 11px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
-                                读取文件
+                                为空返回error
                             </div>
                         </div>
                     </div>
                 </foreignObject>
-                <text x="85" y="44" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    读取文件
+                <text x="70" y="294" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    为空返回error
                 </text>
             </switch>
         </g>
-        <path d="M 80 150 L 85 80" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <rect x="20" y="150" width="120" height="60" rx="9" ry="9" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <path d="M 140 140 L 250 140 Q 260 140 260 150 L 260 260" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <rect x="200" y="260" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 180px; margin-left: 21px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 290px; margin-left: 201px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
-                                判断头指针
+                                不为空文件指针指向文件 并打开
                             </div>
                         </div>
                     </div>
                 </foreignObject>
-                <text x="80" y="184" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    判断头指针
+                <text x="260" y="294" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    不为空文件指针指向文件 并打开
                 </text>
             </switch>
         </g>
-        <path d="M 60 270 L 80 210" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <rect x="0" y="270" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <path d="M 260 405 L 260 320" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <rect x="200" y="405" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 300px; margin-left: 1px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 435px; margin-left: 201px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
-                                为空返回error
+                                若文件内没有数据返回无信息
                             </div>
                         </div>
                     </div>
                 </foreignObject>
-                <text x="60" y="304" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    为空返回error
+                <text x="260" y="439" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    若文件内没有数据返回无信息
                 </text>
             </switch>
         </g>
-        <path d="M 140 180 L 200 260" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <rect x="160" y="260" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <ellipse cx="70" cy="30" rx="60" ry="30" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 290px; margin-left: 161px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 30px; margin-left: 11px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
-                                不为空文件指针指向文件 并打开
+                                读取文件
                             </div>
                         </div>
                     </div>
                 </foreignObject>
-                <text x="220" y="294" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    不为空文件指针指向文件 并打开
+                <text x="70" y="34" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    读取文件
                 </text>
             </switch>
         </g>
-        <path d="M 190 370 L 220 320" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <rect x="140" y="370" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <path d="M 70 110 L 140 140 L 70 170 L 0 140 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 400px; margin-left: 141px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 140px; margin-left: 1px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
-                                若文件内没有数据返回无信息
+                                判断头指针
                             </div>
                         </div>
                     </div>
                 </foreignObject>
-                <text x="200" y="404" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    若文件内没有数据返回无信息
+                <text x="70" y="144" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    判断头指针
                 </text>
             </switch>
         </g>
@@ -95,7 +95,7 @@
         <g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"/>
         <a transform="translate(0,-5)" xlink:href="https://www.diagrams.net/doc/faq/svg-export-text-problems" target="_blank">
             <text text-anchor="middle" font-size="10px" x="50%" y="100%">
-                Viewer does not support full SVG 1.1
+                Text is not SVG - cannot display
             </text>
         </a>
     </switch>
diff --git a/graph/saveData.drawio.svg b/graph/saveData.drawio.svg
index 0af3f30..9aa6110 100644
--- a/graph/saveData.drawio.svg
+++ b/graph/saveData.drawio.svg
@@ -1,13 +1,13 @@
-<svg host="65bd71144e" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="341px" height="466px" viewBox="-0.5 -0.5 341 466" content="&lt;mxfile&gt;&lt;diagram id=&quot;R_TwbHZSUeR_yKRBnNag&quot; name=&quot;Page-1&quot;&gt;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&lt;/diagram&gt;&lt;/mxfile&gt;">
+<svg host="65bd71144e" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="321px" height="476px" viewBox="-0.5 -0.5 321 476" content="&lt;mxfile&gt;&lt;diagram id=&quot;R_TwbHZSUeR_yKRBnNag&quot; name=&quot;Page-1&quot;&gt;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&lt;/diagram&gt;&lt;/mxfile&gt;">
     <defs/>
     <g>
-        <path d="M 80 40 L 80 53.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 80 58.88 L 76.5 51.88 L 80 53.63 L 83.5 51.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <ellipse cx="80" cy="20" rx="60" ry="20" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <path d="M 60 40 L 60 53.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 60 58.88 L 56.5 51.88 L 60 53.63 L 63.5 51.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <ellipse cx="60" cy="20" rx="60" ry="20" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 20px; margin-left: 21px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 20px; margin-left: 1px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 12px; font-family: &quot;Times New Roman&quot;; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 save_data
@@ -15,18 +15,18 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="80" y="24" fill="rgb(0, 0, 0)" font-family="Times New Roman" font-size="12px" text-anchor="middle">
+                <text x="60" y="24" fill="rgb(0, 0, 0)" font-family="Times New Roman" font-size="12px" text-anchor="middle">
                     save_data
                 </text>
             </switch>
         </g>
-        <path d="M 80 100 L 80 113.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 80 118.88 L 76.5 111.88 L 80 113.63 L 83.5 111.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <path d="M 20 100 L 40 60 L 140 60 L 120 100 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 60 100 L 60 113.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 60 118.88 L 56.5 111.88 L 60 113.63 L 63.5 111.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 0 100 L 20 60 L 120 60 L 100 100 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 80px; margin-left: 21px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 80px; margin-left: 1px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 12px; font-family: &quot;Times New Roman&quot;; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 输入文件名
@@ -34,18 +34,18 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="80" y="84" fill="rgb(0, 0, 0)" font-family="Times New Roman" font-size="12px" text-anchor="middle">
+                <text x="60" y="84" fill="rgb(0, 0, 0)" font-family="Times New Roman" font-size="12px" text-anchor="middle">
                     输入文件名
                 </text>
             </switch>
         </g>
-        <path d="M 80 160 L 80 173.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 80 178.88 L 76.5 171.88 L 80 173.63 L 83.5 171.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <rect x="20" y="120" width="120" height="40" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <path d="M 60 160 L 60 173.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 60 178.88 L 56.5 171.88 L 60 173.63 L 63.5 171.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <rect x="0" y="120" width="120" height="40" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 140px; margin-left: 21px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 140px; margin-left: 1px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 12px; font-family: &quot;Times New Roman&quot;; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 打开文件
@@ -53,20 +53,20 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="80" y="144" fill="rgb(0, 0, 0)" font-family="Times New Roman" font-size="12px" text-anchor="middle">
+                <text x="60" y="144" fill="rgb(0, 0, 0)" font-family="Times New Roman" font-size="12px" text-anchor="middle">
                     打开文件
                 </text>
             </switch>
         </g>
-        <path d="M 80 240 L 80 253.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 80 258.88 L 76.5 251.88 L 80 253.63 L 83.5 251.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <path d="M 140 210 L 260 210 Q 270 210 270 220 L 270 253.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 270 258.88 L 266.5 251.88 L 270 253.63 L 273.5 251.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <path d="M 80 180 L 140 210 L 80 240 L 20 210 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 60 240 L 60 253.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 60 258.88 L 56.5 251.88 L 60 253.63 L 63.5 251.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 120 210 L 240 210 Q 250 210 250 220 L 250 253.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 250 258.88 L 246.5 251.88 L 250 253.63 L 253.5 251.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 60 180 L 120 210 L 60 240 L 0 210 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 210px; margin-left: 21px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 210px; margin-left: 1px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 12px; font-family: &quot;Times New Roman&quot;; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
                                 打开文件成功？
@@ -74,78 +74,75 @@
                         </div>
                     </div>
                 </foreignObject>
-                <text x="80" y="214" fill="rgb(0, 0, 0)" font-family="Times New Roman" font-size="12px" text-anchor="middle">
+                <text x="60" y="214" fill="rgb(0, 0, 0)" font-family="Times New Roman" font-size="12px" text-anchor="middle">
                     打开文件成功？
                 </text>
             </switch>
         </g>
-        <path d="M 80 320 L 80 333.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 80 338.88 L 76.5 331.88 L 80 333.63 L 83.5 331.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <path d="M 155 260 C 157.76 260 160 262.24 160 265 L 160 312.5 Q 120 299 80 312.5 Q 40 326 0 312.5 L 0 267.5 L 0 265 C 0 262.24 2.24 260 5 260 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 60 320 L 60 333.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 60 338.88 L 56.5 331.88 L 60 333.63 L 63.5 331.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 60 380 L 60 418.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 60 423.88 L 56.5 416.88 L 60 418.63 L 63.5 416.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <rect x="0" y="340" width="120" height="40" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 158px; height: 1px; padding-top: 290px; margin-left: 1px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 360px; margin-left: 1px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 12px; font-family: &quot;Times New Roman&quot;; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
-                                把所有库存记录
-                                <br/>
-                                写入文件
+                                关闭文件
                             </div>
                         </div>
                     </div>
                 </foreignObject>
-                <text x="80" y="294" fill="rgb(0, 0, 0)" font-family="Times New Roman" font-size="12px" text-anchor="middle">
-                    把所有库存记录
-写入文件
+                <text x="60" y="364" fill="rgb(0, 0, 0)" font-family="Times New Roman" font-size="12px" text-anchor="middle">
+                    关闭文件
                 </text>
             </switch>
         </g>
-        <path d="M 80 380 L 80 418.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 80 423.88 L 76.5 416.88 L 80 418.63 L 83.5 416.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <rect x="20" y="340" width="120" height="40" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <path d="M 250 300 L 250 390 Q 250 400 240 400 L 66.37 400" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 61.12 400 L 68.12 396.5 L 66.37 400 L 68.12 403.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 180 300 L 200 260 L 320 260 L 300 300 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 360px; margin-left: 21px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 280px; margin-left: 181px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
                             <div style="display: inline-block; font-size: 12px; font-family: &quot;Times New Roman&quot;; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
-                                关闭文件
+                                提示打开文件失败
                             </div>
                         </div>
                     </div>
                 </foreignObject>
-                <text x="80" y="364" fill="rgb(0, 0, 0)" font-family="Times New Roman" font-size="12px" text-anchor="middle">
-                    关闭文件
+                <text x="250" y="284" fill="rgb(0, 0, 0)" font-family="Times New Roman" font-size="12px" text-anchor="middle">
+                    提示打开文件失败
                 </text>
             </switch>
         </g>
-        <path d="M 56.73 425 L 103.27 425 C 123.55 425 140 433.95 140 445 C 140 456.05 123.55 465 103.27 465 L 56.73 465 C 36.45 465 20 456.05 20 445 C 20 433.95 36.45 425 56.73 425 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <path d="M 270 300 L 270 390 Q 270 400 260 400 L 86.37 400" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 81.12 400 L 88.12 396.5 L 86.37 400 L 88.12 403.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
-        <path d="M 200 300 L 220 260 L 340 260 L 320 300 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <rect x="0" y="260" width="120" height="60" rx="9" ry="9" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
         <g transform="translate(-0.5 -0.5)">
             <switch>
                 <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
-                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 280px; margin-left: 201px;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 290px; margin-left: 1px;">
                         <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
-                            <div style="display: inline-block; font-size: 12px; font-family: &quot;Times New Roman&quot;; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
-                                提示打开文件失败
+                            <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
+                                把所有库存记录写进文件夹
                             </div>
                         </div>
                     </div>
                 </foreignObject>
-                <text x="270" y="284" fill="rgb(0, 0, 0)" font-family="Times New Roman" font-size="12px" text-anchor="middle">
-                    提示打开文件失败
+                <text x="60" y="294" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    把所有库存记录写进文件夹
                 </text>
             </switch>
         </g>
+        <ellipse cx="60" cy="450" rx="60" ry="25" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
     </g>
     <switch>
         <g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"/>
         <a transform="translate(0,-5)" xlink:href="https://www.diagrams.net/doc/faq/svg-export-text-problems" target="_blank">
             <text text-anchor="middle" font-size="10px" x="50%" y="100%">
-                Viewer does not support full SVG 1.1
+                Text is not SVG - cannot display
             </text>
         </a>
     </switch>