任务4新建com.ssm.d.xml文件和bean-di.xml.xml文件新建class模块

grademanagement-SpringProject/src/bean-di-xml.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xsi:schemaLocation="http://www.springframework.org/schema/beans
+        http://www.springframework.org/schema/beans/spring-beans.xsd">
+
+    <!-- 分工1：班级Bean Setter属性注入 -->
+    <bean id="classInfo" class="com.ssm.di.xml.Class">
+        <property name="classId" value="1"/>
+        <property name="className" value="计算机25-12B班"/>
+        <property name="studentCount" value="45"/>
+    </bean>
+
+
+
+</beans>

grademanagement-SpringProject/src/com/ssm/di/xml/Class.java

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+package com.ssm.di.xml;
+
+// 班级实体类 DI XML版
+public class Class {
+    private Integer classId;
+    private String className;
+    private Integer studentCount;
+
+    // 无参构造 Spring必须
+    public Class() {}
+
+    // setter方法（用于XML setter注入）
+    public Integer getClassId() { return classId; }
+    public void setClassId(Integer classId) { this.classId = classId; }
+    public String getClassName() { return className; }
+    public void setClassName(String className) { this.className = className; }
+    public Integer getStudentCount() { return studentCount; }
+    public void setStudentCount(Integer studentCount) { this.studentCount = studentCount; }
+
+    // 任务要求：重写toString方法
+    @Override
+    public String toString() {
+        return "Class{" +
+                "班级ID=" + classId +
+                ", 班级名称='" + className + '\'' +
+                ", 班级人数=" + studentCount +
+                '}';
+    }
+
+    // 任务要求：新增printInfo输出方法
+    public void printInfo() {
+        System.out.println("===== 班级信息 =====");
+        System.out.println("班级ID：" + classId);
+        System.out.println("班级名称：" + className);
+        System.out.println("班级总人数：" + studentCount);
+    }
+}

grademanagement-SpringProject/src/com/ssm/di/xml/TestDI.java

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+package com.ssm.di.xml;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+// Spring DI XML测试类 小组共用
+public class TestDI {
+    public static void main(String[] args) {
+        // 加载小组共用bean-di-xml.xml配置文件
+        ApplicationContext ac = new ClassPathXmlApplicationContext("bean-di-xml.xml");
+
+        // 获取4个分工Bean对象
+        Class classInfo = (Class) ac.getBean("classInfo");
+
+
+        System.out.println("========== 调用printInfo()方法输出 ==========");
+        // 任务要求：调用printInfo方法输出每个实体属性
+        classInfo.printInfo();
+
+
+        System.out.println("\n========== 重写toString()方法输出 ==========");
+        // 任务要求：调用toString方法输出
+        System.out.println(classInfo);
+
+    }
+}