乱码及Restful

最新推荐文章于 2022-04-16 22:40:55 发布

原创最新推荐文章于 2022-04-16 22:40:55 发布 · 463 阅读

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#SSH #Spring #Spring MVC

Spring mvc 专栏收录该内容

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1、乱码的解决

通过过滤器来解决乱码，Spring mvc 中提供CharacterEncodingFilter

乱码（post传递）问题：

http://localhost:8080/spring_data/user.do?name=艾伦

通过配置web.xml来解决：

在web.xml的servlet标签前面添加：

	<filter>
   	<filter-name>CharacterEncodingFilter</filter-name>
   	<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
   	<init-param>
   		<param-name>encoding</param-name>
   		<param-value>UTF-8</param-value>
    	</init-param>
   	</filter>
   	<filter-mapping>
   		<filter-name>CharacterEncodingFilter</filter-name>
   		<url-pattern>*.do</url-pattern>
  	 </filter-mapping>

完整：

<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	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">
	<display-name>02springmvc_hello</display-name>
	<!-- spring mvc的配置 配置DispatcherServlet 这个类接管所有请求。 -->
	<filter>
		<filter-name>CharacterEncodingFilter</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>CharacterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

	<servlet>
		<servlet-name>mvc</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<!-- 指定spring mvc配置文件的名称和位置 -->
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:mvc.xml</param-value>
		</init-param>
	</servlet>
	<servlet-mapping>
		<servlet-name>mvc</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>
	<welcome-file-list>
		<welcome-file>index.html</welcome-file>
		<welcome-file>index.htm</welcome-file>
		<welcome-file>index.jsp</welcome-file>
		<welcome-file>default.html</welcome-file>
		<welcome-file>default.htm</welcome-file>
		<welcome-file>default.jsp</welcome-file>
	</welcome-file-list>
</web-app>

如果是get方式乱码：

a:修改Tomcat配置

b:自定义乱码解决的过滤器

2、Restful风格的URL

优点：轻量级，效率高，安全

Hello2Controller.jsp（get提交）

package controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@RequestMapping("hello2")
public class HelloController2 {
	@RequestMapping(params = "method=add")
	public String add() {
		System.out.println("add()");
		return "redirect:/add.jsp";

	}

	public String delete() {
		System.out.println("delete()");
		return "redirect:/delete.jsp";

	}

	public String update() {
		System.out.println("update()");
		return "redirect:/update.jsp";

	}

	public String search() {
		System.out.println("search()");
		return "redirect:/search.jsp";

	}

}

浏览器运行：http://localhost:8080/spring_data/hello2.do?method=add

条转到：http://localhost:8080/spring_data/add.jsp

post提交：

@RequestMapping(params = "method=add",method=RequestMethod.POST)