1.环境搭建:
在maven的pom.xml文件中导入两个依赖
1).commons-fileupload
2).commons-io
在resources目录下的springmvc.xml文件中配置multipartResolver
<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
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.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<!--包扫描-->
<context:component-scan base-package="cn.itcast"></context:component-scan>
<!--配置multipartResolver,注意:id名称固定为multipartResolver-->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
</bean>
<mvc:annotation-driven ></mvc:annotation-driven>
<!--让静态资源不经过过滤器-->
<mvc:resources mapping="/js/**" location="/js/"></mvc:resources>
<!--视图解析器给controller中返回的逻辑视图名加上前缀和后缀-->
<bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
2.编写前台测试jsp
<form action="/test/file" method="post" enctype="multipart/form-data">
上传的文件:<input type="file" name="upload"><br/>
密钥:<input type="text" name="password"><br/>
<input type="submit" value="提交">
</form>
注意页面三要素:
1).表单提交方式必须为post
2).表单中必须有file域,即type="file"
3).表单中enctype="multipart/form-data"
3.编写后台测试代码
@Controller
@RequestMapping("/test")
public class FileUploadController {
@RequestMapping("/file")
public String testFileUpload(HttpServletRequest request, MultipartFile upload) throws IOException {
//upload是表单中文件name属性值,必须保持一致
System.out.println("testFileUpload...");
String realPath = request.getSession().getServletContext().getRealPath("/uploads");
File file = new File(realPath);
if(!file.exists()){
file.mkdirs();//创建文件夹
}
String filename = upload.getOriginalFilename(); //获取文件名
String name = upload.getName();//获取表单中的name属性值 即upload
String uuid = UUID.randomUUID().toString().replaceAll("-", "");//生成uuid避免文件名重复导致冲突覆盖
filename=uuid+"_"+filename;
upload.transferTo(new File(file,filename));
return "forward:success.jsp";
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
