SpringMVC中如何解决POST请求中文乱码问题GET的又如何处理呢
method属性值改为post，中文乱码解决：添加springmvc过滤器:org.springframework.web.filter.CharacterEncodingFilter
method属性改为get，中文乱码解决：tomcat的server.xml文件，在Connector标签那一行，添加UriEncoding=UTF-8即可
核心代码show
-
代码结构图
-
springmvc.xml
<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
<!-- 配置自动扫描到的包 -->
<context:component-scan base-package="cn.wangzengqiang.interview.atguigu2019.javaee.spring.springmvc"></context:component-scan>
<!-- 配置视图解析器 -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!-- 配置不经过处理器方法直接到达响应页面
path属性：设置要映射请求地址
view-name属性：设置视图名
-->
<mvc:view-controller path="/testViewResolver" view-name="success"/>
<!-- 配置了不经过处理器方法直接到达响应页面之后，处理器方法上的@RequestMapping将失效，此时必须配置以下标签 -->
<mvc:annotation-driven></mvc:annotation-driven>
</beans>
- web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<!--
解决post请求的请求乱码问题
但是不能解决get请求乱码问题：
1）修改server.xml找到Connector标签，加入URIEncoding="UTF-8"即可
-->
<!-- 设置CharacterEncodingFilter -->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!-- 设置请求的字符集 -->
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<!-- 设置响应的字符集 -->
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet>
<servlet-name>springDispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springDispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 注册HiddenHttpMethodFilter，目的是为了将一个POST请求转换为PUT或者DELETE请求 -->
<filter>
<filter-name>HiddenHttpMethodFilter</filter-name>
<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>HiddenHttpMethodFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
- Employee.java
public class Employee {
private Integer id;
private String lastName;
private String email;
private Department dept;
public Employee() {
super();
}
public Employee(Integer id, String lastName, String email, Department dept) {
super();
this.id = id;
this.lastName = lastName;
this.email = email;
this.dept = dept;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public Department getDept() {
return dept;
}
public void setDept(Department dept) {
this.dept = dept;
}
@Override
public String toString() {
return "Employee [id=" + id + ", lastName=" + lastName + ", email=" + email + ", dept=" + dept + "]";
}
}
- Department.java
public class Department {
private Integer id;
private String name;
public Department() {
super();
}
public Department(Integer id, String name) {
super();
this.id = id;
this.name = name;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
return "Department [id=" + id + ", name=" + name + "]";
}
}
- SpringMVCHandler.java
@Controller
public class SpringMVCHandler {
public static final String SUCCESS = "success";
public static final String SUCCESS1 = "success1";
//1.SpringMVC中如何解决POST请求中文乱码问题，GET的又如何处理呢
/*
* ★测试入参为POJO
* Spring MVC会按请求参数名和 POJO属性名进行自动匹配，
* 自动为该对象填充属性值。支持级联属性
*/
@RequestMapping("/testPOJO")
public String testPOJO(Employee employee) {
System.out.println("员工的信息是：" + employee);
return SUCCESS;
}
//1.简单的谈一下SpringMVC的工作流程
//处理模型数据方式一：将方法的返回值设置为ModelAndView
@RequestMapping("/testModelAndView")
public ModelAndView testModelAndView() {
//1.创建ModelAndView对象
ModelAndView mav = new ModelAndView();
//2.设置模型数据，最终会放到request域中
mav.addObject("user", "admin");
//3.设置视图
mav.setViewName("success1");
return mav;
}
/*
* ★处理模型数据方式二：方法的返回值仍是String类型，在方法的入参中传入Map、Model或者ModelMap
* 不管将处理器方法的返回值设置为ModelAndView还是在方法的入参中传入Map、Model或者ModelMap，
* SpringMVC都会转换为一个ModelAndView对象
*/
@RequestMapping("/testMap")
public String testMap(Map<String , Object> map) {
//向Map中添加模型数据，最终会自动放到request域中
map.put("user", new Employee(1, "工一", "gongyi@wangzengqiang.cn", new Department(101, "教学部")));
return SUCCESS1;
}
}
- success.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>Success Page</h1>
</body>
</html>
- index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<%--method属性值改为post，中文乱码解决：添加springmvc过滤器:org.springframework.web.filter.CharacterEncodingFilter
method属性改为get，中文乱码解决：tomcat的server.xml文件，在Connector标签那一行，添加UriEncoding=UTF-8即可--%>
<form action="${pageContext.request.contextPath }/testPOJO" method="get">
<!-- 表单项中的name属性值要与POJO类中的属性名保持一致 -->
工号：<input type="text" name="id"><br>
姓名：<input type="text" name="lastName"><br>
邮箱：<input type="text" name="email"><br>
部门编号：<input type="text" name="dept.id"><br>
部门名称：<input type="text" name="dept.name"><br>
<input type="submit">
</form>
</body>
</html>
彩蛋
-
1.普通maven工程变为web工程
项目右键找到add framework suppport，添加web依赖 -
2.idea 运行tomcat console中文乱码
idea tomat VM options 设置为 -Dfile.encoding=UTF-8
idea console乱码：idea.vmoptions文件后面追加：-Dfile.encoding=UTF-8 -
3.idea 点击无反应
解决：在idea安装目录下的bin目录下的idea.bat最后添加pause，然后点击idea.bat就可以看到报错信息：
Error opening zip file or JAR manifest missing
后来删除C盘IDEA相关文件也不行
C:\Users\Administrator\AppData\Local\JetBrains\IntelliJIdea2022.2 有日志
C:\Users\Administrator\AppData\Roaming\JetBrains\IntelliJIdea2022.2 有配置
后来卸载重装也不行，
然后用Everything搜索：D:\BaiduNetdiskDownload 发现里面有个文件夹有idea64.exe.vmoptions 文件，以前破解idea时用过
我在idea中追加：-Dfile.encoding=UTF-8 解决乱码时，打开edit custom vm options中文乱码了，导致启动报错
总结：
1.安装文件最后不要放在中文目录下
2.idea启动不了可以在idea.bat添加pause看异常日志 -
4.idea maven web out里面无index.jsp
删除web目录，重新添加web 支持 -
5.idea运行tomcat console关注的几个文件
1）server 有乱码
tomcat安装目录的conf下logging.properties中的java.util.logging.ConsoleHandler.encoding改为UTF-8即可
2）tomcat catalina log
3）tomcat localhost log -
6.chrome查看源代码