FAQ:SpringMVC

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404

404无页面.png 找不到页面
404无Handler.png HandlerMapping 根据 url 找不到 Handler

post中文乱码

对于post请求时出现乱码解决方法:

  • 在web.xml中加入:
	<!-- post乱码过虑器 -->
	<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>

get中文乱码

对于get请求中文参数出现乱码解决方法有两个:

  1. 修改tomcat配置文件,添加编码与工程编码一致:(ISO8859-1是tomcat默认编码)
    <Connector URIEncoding="utf-8" connectionTimeout="20000" port="8080" protocol="HTTP/1.1" redirectPort="8443"/>
  2. 代码中对参数进行重新编码:(将tomcat编码后的内容按utf-8编码)
    String userName = new String(request.getParamter("userName").getBytes("ISO8859-1"),"utf-8");

获取项目路径

  1. pojo中获取项目根目录:String path = request.getSession().getServletContext().getRealPath("upload");【????】
    【????】
    
  2. js中获取项目根目录:${pageContext.request.contextPath}
    <script type="text/javascript">
    function editItemsAllSubmit(){
    	//提交form
    	document.itemsForm.action="${pageContext.request.contextPath}/items/editItemsAllSubmit.action";
    	document.itemsForm.submit();
    }
    function queryItems(){
    	//提交form
    	document.itemsForm.action="${pageContext.request.contextPath}/items/queryItems.action";
    	document.itemsForm.submit();
    }
    </script>
    
    ...
    
    <form name="itemsForm" action="${pageContext.request.contextPath}/items/queryItems.action" method="post">
    ...