“FAQ:SpringMVC”的版本间差异
		
		
		
		
		
		跳到导航
		跳到搜索
		
				
		
		
	
无编辑摘要  | 
				无编辑摘要  | 
				||
| (未显示同一用户的1个中间版本) | |||
| 第2行: | 第2行: | ||
== 404 ==  | == 404 ==  | ||
{| class="wikitable"   | |||
|-  | |||
| [[File:404无页面.png|800px]]  | |||
| 找不到页面  | |||
|-  | |||
| [[File:404无Handler.png|800px]]  | |||
| 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:  | |||
<syntaxhighlight lang="xml">  | |||
	<!-- 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>  | |||
</syntaxhighlight>  | |||
==   | == 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:  | |||
# 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)  | |||
#: <syntaxhighlight lang="xml" inline><Connector URIEncoding="utf-8" connectionTimeout="20000" port="8080" protocol="HTTP/1.1" redirectPort="8443"/></syntaxhighlight>  | |||
# 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)  | |||
#: <syntaxhighlight lang="xml" inline>String userName = new String(request.getParamter("userName").getBytes("ISO8859-1"),"utf-8");</syntaxhighlight>  | |||
== 获取项目路径 ==  | |||
# pojo中获取项目根目录:<syntaxhighlight lang="java" inline>String path = request.getSession().getServletContext().getRealPath("upload");</syntaxhighlight>【????】  | |||
#: <syntaxhighlight lang="java">  | |||
【????】  | |||
</syntaxhighlight>  | |||
# js中获取项目根目录:<syntaxhighlight lang="JavaScript" inline>${pageContext.request.contextPath}</syntaxhighlight>  | |||
#: <syntaxhighlight lang="JavaScript">  | |||
<script type="text/javascript">  | |||
function editItemsAllSubmit(){  | |||
	//提交form  | |||
	document.itemsForm.action="${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">  | |||
...  | |||
</syntaxhighlight>  | |||
2020年10月6日 (二) 02:06的最新版本
404
 
 | 
找不到页面 | 
 
 | 
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:
- 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"/>
 - 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
- pojo中获取项目根目录:
String path = request.getSession().getServletContext().getRealPath("upload");【????】【????】
 - 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"> ...
 

