利用SpringMVC和Ajax实现文件上传功能

网友投稿 257 2022-12-29


利用SpringMVC和Ajax实现文件上传功能

个人根据相关资料实现利用SpringMVC和Ajax实现文件上传功能:

环境:

1.JDK1.7

2.maven3.3.9

3.Tomcat7

第一步:

导入相关jar包:

第二步:

配置springmvc-config.xml

xmlns:xsi="http://w3.org/2001/XMLSchema-instance" xmlns:p="http://springframework.org/schema/p"

xmlns:context="http://springframework.org/schema/context"

xsi:schemaLocation="

http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context.xsd">

class="org.springframework.web.servlet.view.InternalResourceViewResolver">

class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

xmlns:xsi="http://w3.org/2001/XMLSchema-instance" xmlns:p="http://springframework.org/schema/p"

xmlns:context="http://springframework.org/schema/context"

xsi:schemaLocation="

http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context.xsd">

class="org.springframework.web.servlet.view.InternalResourceViewResolver">

class="org.springframework.web.servlet.view.InternalResourceViewResolver">

class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

第三步:

配置web.xml

xmlns="http://xmlns.jcp.org/xml/ns/javaee"

xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"

id="WebApp_ID" version="3.1">

fileupload

index.html

index.htm

index.jsp

default.html

default.htm

default.jsp

springDispatcherServlet

org.springframework.web.servlet.DispatcherServlet

contextConfigLocation

classpath:springmvc-config.xml

1

springDispatcherServlet

/

xmlns="http://xmlns.jcp.org/xml/ns/javaee"

xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"

id="WebApp_ID" version="3.1">

fileupload

index.html

index.htm

index.jsp

default.html

default.htm

default.jsp

springDispatcherServlet

org.springframework.web.servlet.DispatcherServlet

contextConfigLocation

classpath:springmvc-config.xml

1

springDispatcherServlet

/

第四步:

新建一个Controller类,并实现文件上传的功能

import java.io.File;

import java.util.HashMap;

import java.util.Map;

import java.util.Random;

import javax.json.Json;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.RequestParam;

import org.springframehttp://work.web.bind.annotation.ResponseBody;

import org.springframework.web.multipart.MultipartFile;

import com.alibaba.fastjson.JSON;

import com.fasterxml.jackson.databind.util.JSONPObject;

@Controller

public class FileUploadController {

@RequestMapping(value = "index", method = RequestMethod.GET)

public String index() {

return "index";

}

@RequestMapping(value = "/upload", method = RequestMethod.POST)

@ResponseBody

public String upload(@RequestParam("file") MultipartFile file,

HttpServletRequest request) {

Map modelMap = new HashMap<>();

if (!file.isEmpty()) {

String storePath = "E://images";

Random r = new Random();

String fileName = file.getOriginalFilename();

String[] split = fileName.split(".jpg");

fileName = split[0] + r.nextInt(1000);

fileName = fileName + ".jpg";

File filePath = new File(storePath, fileName);

if (!filePath.getParentFile().exists()) {

filePath.getParentFile().mkdirs();// 如果目录不存在,则创建目录

}

try {

file.transferTo(new File(storePath + File.separator + fileName));// 把文件写入目标文件地址

} catch (Exception e) {

e.printStackTrace();

modelMap.put("back", "error");

String json = JSON.toJSONString(modelMap);

return json;

}

modelMap.put("back", "success");

} else {

modelMap.put("back", "error");

}

String json = JSON.toJSONString(modelMap);

return json;

}

}

第五步:

在WEB-INF下,新建一个pages文件夹,并创建实现文件上传的jsp或者HTML文件(我使用的是jsp):

在index.jsp下写入相关的ajax的方法,在使用ajax之前必须先导入js库。


第六步:

进行测试

上传文件

上传成功


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