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SpringMVC文件上传
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‎WebContent/WEB-INF/lib/commons-fileupload-1.2.1.jar‎

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‎WebContent/WEB-INF/springmvc-servlet.xml‎

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然后上面的BeanNameUrlHandlerMapping和SimpleControllerHandlerAdapter还有你自己定义的HelloController 就不需要配置了
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-->
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<context:component-scan base-package="com.yale.test.springmvc.controller"/>
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<!-- SpringMVC文件上传依赖commons-fileupload-1.2.1.jar包 commons-io-2.5.jar 包 -->
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<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
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<property name="defaultEncoding" value="utf-8"></property>
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<property name="maxUploadSize" value="10485760000"></property>
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<property name="maxInMemorySize" value="40960"></property>
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</bean>
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</beans>

‎WebContent/WEB-INF/web.xml‎

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<!-- <servlet-name>subBaseServlet</servlet-name> filter-mapping 里面还可以配置servlet-name 指定要拦截的servlet,可以有多个servlet-name -->
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</filter-mapping>
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<filter>
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<filter-name>springMvcEncode</filter-name>
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<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
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<init-param>
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<description>SpringMVC解决post请求中文乱码的问题CharacterEncodingFilter,encoding是CharacterEncodingFilter类的一个属性</description>
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<param-name>encoding</param-name>
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<param-value>utf-8</param-value>
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</init-param>
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</filter>
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<filter-mapping>
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<filter-name>springMvcEncode</filter-name>
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<url-pattern>*.springmvc</url-pattern>
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</filter-mapping>
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<listener>
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<listener-class>com.yale.test.web.listener.ListenerDemo</listener-class>
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</listener>

‎WebContent/fileupload/16进制.png‎

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‎WebContent/fileupload/20190903.txt‎

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‎WebContent/fileupload/微信截图_20200121102233.png‎

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‎WebContent/springmvc/fileupload.jsp‎

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<%@ page language="java" contentType="text/html; charset=UTF-8"
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pageEncoding="UTF-8"%>
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<%@ taglib prefix="c" uri="/WEB-INF/c.tld"%>
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>SpringMVC文件上传</title>
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</head>
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<body>
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<form action="/pcis/upload.springmvc" method="post" enctype="multipart/form-data">
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请选择文件:<input type="file" name="file" />
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<input type="submit" value="上传">
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</form>
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</body>
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</html>

‎WebContent/springmvc/fileuploadbatch.jsp‎

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<%@ page language="java" contentType="text/html; charset=UTF-8"
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pageEncoding="UTF-8"%>
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<%@ taglib prefix="c" uri="/WEB-INF/c.tld"%>
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>SpringMVC文件上传</title>
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</head>
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<body>
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<form action="/pcis/uploadbatch.springmvc" method="post" enctype="multipart/form-data">
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请选择文件:<input type="file" name="file" /><br/>
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请选择文件2:<input type="file" name="file" /><br/>
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<input type="submit" value="上传">
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</form>
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</body>
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</html>

‎WebContent/springmvc/form.jsp‎

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<%@ page language="java" contentType="text/html; charset=UTF-8"
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pageEncoding="UTF-8"%>
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<%@ taglib prefix="c" uri="/WEB-INF/c.tld"%>
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>SpringMVC获取传参</title>
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</head>
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<body>
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<form action="/pcis/helloResDataEncode.springmvc" method="post">
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姓名:<input type="text" name="name" />
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<input type="submit" value="提交Post请求">
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</form>
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</body>
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</html>

‎WebContent/springmvc/hello.jsp‎

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</head>
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<body>
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${msg }
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<%
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String val = request.getAttribute("msg");
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System.out.println("使用request一样可以得到数据" + val);
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%>
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</body>
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</html>

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