SpringMvc配置文件代码
对于定义的消息转换器 必须通过 mvc:annotation-driven进行注册 消息转换器 会对请求的mini类型进行匹配 如果无法匹配 不会进行消息转换
[html] view plain copy <?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:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd "> <!-- 配置扫描 --> <context:component-scan base-package="cn.et"></context:component-scan> <!--配置自己定义的消息转换器 --> <mvc:annotation-driven> <mvc:message-converters> <bean id="myMessageConventor" class="cn.et.day20170601.MyMessageConventor"> <property name="supportedMediaTypes"> <list> <!-- 设置响应的支持的响应类型 --> <value>text/html;charset=utf-8</value> <!-- 设置请求body的支持类型--> <value>application/x-www-form-urlencoded</value> </list> </property> </bean> </mvc:message-converters> </mvc:annotation-driven> </beans>
定义一个消息转换器处理类，该类必须继承AbstractHttpMessageConverter<？>
action代码
[java] view plain copy public class MyMessageConventor extends AbstractHttpMessageConverter<Phone>{ /** *解析请求的参数 */ @Override protected Phone readInternal(Class arg0, HttpInputMessage httpInputMessage) throws IOException, HttpMessageNotReadableException { InputStream is=httpInputMessage.getBody(); BufferedReader br=new BufferedReader(new InputStreamReader(is)); String str=br.readLine(); String string=str.split("=")[1]; Phone phone=new Phone(); phone.setCode(string.split("-")[0]); phone.setNumber(string.split("-")[1]); return phone; } /** * 如果支持 true支持 会调用 readInternal 将http消息 转换成方法中被@RequestBody注解的参数 * 会调用writeInternal 将被@ResponseBody注解的返回对象转换成数据字节响应给浏览器 */ @Override protected boolean supports(Class arg0) { if(arg0==Phone.class){ return true; } return false; } /** * 响应给对象的参数 * 将方法被@ResponseBody注解的返回对象转换成数据字节响应给浏览器 */ @Override protected void writeInternal(Phone phone, HttpOutputMessage httpOutputMessage) throws IOException, HttpMessageNotWritableException { OutputStream os=httpOutputMessage.getBody(); String str=phone.getCode()+"-"+phone.getNumber(); os.write(str.getBytes()); } }
Action类的需要用到@RequestBody和@ResponseBody注解关联到MyMessageConvertor
[java] view plain copy @Controller @RequestMapping(value="/day0601") public class MyMessageAction { @RequestMapping(value="/myMessage.action") //告诉他响应的内容 @ResponseBody //用@RequestBody这个接收自定义的请求体消息 public Phone myMessage(@RequestBody Phone phone){ System.out.println(phone.getCode()+"-"+phone.getNumber()); return phone; } }
编写jsp文件跳转的动作只能是form表单，并且添加属性enctype="application/x-www-form-urlencoded" 必需要是post提交
jsp代码[html] view plain copy <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP 'phone.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <form action="${pageContext.request.contextPath}/day0601/myMessage.action" method="post" enctype="application/x-www-form-urlencoded"> <input type="hidden" name="phone" value="0755-123456"/> <input type="submit" value="提交"/> </form> </body> </html>
web.xml配置
[html] view plain copy <?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <!-- spring自带的解决乱码的过滤器 --> <filter> <filter-name>utf</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>utf</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <filter> <!-- 配置这个selevlet来加载sprinmvc的配置文件 --> <filter-name>hidden</filter-name> <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class> </filter> <filter-mapping> <filter-name>hidden</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 通过这个参数去找配置文件 不加这个参数默认在 /WEB-INF/找spservlet-name-servlet.xml这个文件--> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:/springmvc.xml</param-value> </init-param> <!-- 启动tomcat的时候就加载 --> <load-on-startup>0</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <!-- /拦截所有以.action --> <url-pattern>*.action</url-pattern> <!-- /拦截所有servlet --> <url-pattern>/</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
