From 861f142ead46fbdf0db4e7612b2ff1f2be9c1248 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=BD=95=E6=A5=9A?= <823169880@qq.com>
Date: Tue, 15 Jan 2019 21:56:30 +0800
Subject: [PATCH] Merge remote-tracking branch 'remotes/origin/master' into
 hechu1

# Conflicts:
#	src/core/process/C_TeacherSearchStudent.java
#	web/jsFile/upload_action.js
---
 src/filter/CharSet.java | 105 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 src/filter/CharSet.java

diff --git a/src/filter/CharSet.java b/src/filter/CharSet.java
new file mode 100644
index 0000000..3c64f86
--- /dev/null
+++ b/src/filter/CharSet.java
@@ -0,0 +1,105 @@
+package filter;
+
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.util.Map;
+
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.annotation.WebFilter;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletRequestWrapper;
+import javax.servlet.http.HttpServletResponse;
+
+@WebFilter(urlPatterns = "/*")
+public class CharSet implements Filter {
+  public void destroy() {
+  }
+
+  public void doFilter(ServletRequest req, ServletResponse resp,
+      FilterChain chain) throws ServletException, IOException {
+    HttpServletRequest httpServletRequest = (HttpServletRequest) req;
+    // 对request包装增强
+    HttpServletRequest myrequest = new MyRequest(httpServletRequest);
+    ((HttpServletResponse)resp).setContentType("text/html;charset=utf-8");
+    chain.doFilter(myrequest, resp);
+
+  }
+
+  public void init(FilterConfig config) throws ServletException {
+
+  }
+}
+class MyRequest extends HttpServletRequestWrapper {
+
+  private HttpServletRequest request;
+
+  private boolean hasEncode;
+
+  public MyRequest(HttpServletRequest request) {
+    super(request);
+    this.request = request;
+  }
+
+  // 对需要增强方法 进行覆盖
+  @Override
+  public Map<String, String[]> getParameterMap() {
+    // 先获得请求方式
+    String method = request.getMethod();
+    if (method.equalsIgnoreCase("post")) {
+      // post请求
+      try {
+        // 处理post乱码
+        request.setCharacterEncoding("utf-8");
+        return request.getParameterMap();
+      } catch (UnsupportedEncodingException e) {
+        e.printStackTrace();
+      }
+    } else if (method.equalsIgnoreCase("get")) {
+      // get请求
+      Map<String, String[]> parameterMap = request.getParameterMap();
+      if (!hasEncode) { // 确保get手动编码逻辑只运行一次
+        for (String parameterName : parameterMap.keySet()) {
+          String[] values = parameterMap.get(parameterName);
+          if (values != null) {
+            for (int i = 0; i < values.length; i++) {
+              try {
+                // 处理get乱码
+                values[i] = new String(values[i].getBytes("ISO-8859-1"), "utf-8");
+              } catch (UnsupportedEncodingException e) {
+                e.printStackTrace();
+              }
+            }
+          }
+        }
+        hasEncode = true;
+      }
+      return parameterMap;
+    }
+
+    return super.getParameterMap();
+  }
+
+  @Override
+  public String getParameter(String name) {
+    Map<String, String[]> parameterMap = getParameterMap();
+    String[] values = parameterMap.get(name);
+    if (values == null) {
+      return null;
+    }
+    return values[0]; // 取回参数的第一个值
+  }
+
+  @Override
+  public String[] getParameterValues(String name) {
+    Map<String, String[]> parameterMap = getParameterMap();
+    String[] values = parameterMap.get(name);
+    return values;
+  }
+
+}
+