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分享springmvc上传文件String不能转换成Commonsmultipart
先上代码吧
网页
controller是这样的
web.xml如下
springmvc.xml如下
测试界面
异常来了：
之前我把method改为了post。然后后台就报没有传file这个parameter
网页
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>上传文件</title>
</head>
<body>
<form action="/upfile.do" enctype="multipart/form-data">
<input type="file" name="file"/>
<input type="submit" value="上传" />
</form>
</body>
</html>controller是这样的
@Controller
public class upFileController {
@RequestMapping("/upfile")
public String fileUpload2(@RequestParam("file") CommonsMultipartFile file) throws IOException {
System.out.println("fileName："+file.getOriginalFilename());
String path="E:/"+new Date().getTime()+file.getOriginalFilename();
File newFile=new File(path);
file.transferTo(newFile);
return "/success";
}}web.xml如下
<?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_3_1.xsd"
version="3.1">
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<session-config>
<session-timeout>20</session-timeout>
</session-config>
<!--spring 字符过滤器-->
<filter>
<filter-name>filterEncoding</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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>filterEncoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener>
<servlet>
<servlet-name>Dispatcher</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>Dispatcher</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>springmvc.xml如下
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
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.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
">
<mvc:annotation-driven></mvc:annotation-driven>
<context:annotation-config/>
<context:component-scan base-package="Controller"/>
<context:component-scan base-package="dao"></context:component-scan>
<context:component-scan base-package="Service"></context:component-scan>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/">
</property>
<property name="suffix" value=".jsp"></property>
</bean>
<bean class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding" value="utf-8"></property>
<property name="maxUploadSize" value="104857600000"></property>
<property name="maxInMemorySize" value="40960"></property>
</bean>
</beans>测试界面
异常来了：
HTTP Status 500 - Failed to convert value of type [java.lang.String] to required type [org.springframework.web.multipart.commons.CommonsMultipartFile]; nested exception is java.lang.IllegalStateException: Cannot convert value of type [java.lang.String] to required type [org.springframework.web.multipart.commons.CommonsMultipartFile]: no matching editors or conversion strategy found之前我把method改为了post。然后后台就报没有传file这个parameter
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