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SpringMVC获取请求参数-集合类型
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SpringMVC获取请求参数-集合类型
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1.創建User實體類
```java public class User {private String username;private int age;public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}@Overridepublic String toString() {return "User{" +"username='" + username + '\'' +", age=" + age +'}';} }2.配置spring mvc.xml文件
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsdhttp://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"><!-- 掃描controller包下得類--><context:component-scan base-package="com.hao.controller"/><!-- 配置內部資源視圖解析器--><bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/jsp/"></property><property name="suffix" value=".jsp"></property></bean><!--注解驅動--><mvc:annotation-driven/> </beans>3.配置web.xml配置文件
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://java.sun.com/xml/ns/javaee"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"id="WebApp_ID" version="3.0"><!-- 配置springMVC的核心配置控制器DispatcherServlet--><servlet><servlet-name>DispatcherServlet</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>classpath:spring-mvc.xml</param-value></init-param><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>DispatcherServlet</servlet-name><url-pattern>/</url-pattern></servlet-mapping><!-- 配置監聽器--><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!-- 全局初始化參數,告訴配置文件路徑--><context-param><param-name>contextConfigLocation</param-name><param-value>classpath:applicationContext.xml</param-value></context-param> </web-app>4.編寫Controller層
@Controller public class UserController {@RequestMapping("/report14")@ResponseBodypublic void save14(VO vo){System.out.println(vo);} }5.編寫VO類封裝集合
public class VO {private List<User> userList;public List<User> getUserList() {return userList;}public void setUserList(List<User> userList) {this.userList = userList;}@Overridepublic String toString() {return "VO{" +"userList=" + userList +'}';} }6.編寫form.jsp文件
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head><title>Title</title> </head> <body><form action="${pageContext.request.contextPath}/report14" method="post"><input type="text" name="userList[0].username"><br/><input type="text" name="userList[0].age"><br/><input type="text" name="userList[1].username"><br/><input type="text" name="userList[1].age"><br/><input type="submit" value="提交"></form> </body> </html>7.啟動tomcat服務器，填寫表單數據，結果如下：
8.亂碼問題解決-》設置編碼過濾器
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