SpringBoot--文件上传

新建一个springboot的项目

直接上代码了：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>com.roncoo.education</groupId>
<artifactId>spring-boot-demo-12-1</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<name>spring-boot-demo-12-1</name>
<description>Demo project for Spring Boot</description>

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.0.RELEASE</version>
<relativePath /> 
</parent>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>

<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>jquery</artifactId>
<version>2.1.4</version>
</dependency>


<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>

<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>

</project>

页面：index.ftl：

<!DOCTYPE html>
<html>
<head lang="en">
<title>Spring Boot Demo - FreeMarker</title>

<link href="/css/index.css" rel="stylesheet" />

</head>
<body>
<center>
<img src="/images/logo.png" />
<h1 id="title">${title}</h1>
</center>

<form method="POST" enctype="multipart/form-data" action="/file/upload">
文件：<input type="file" name="roncooFile" />
<input type="submit" value="上传" />
</form>

<script type="text/javascript" src="/webjars/jquery/2.1.4/jquery.min.js"></script>

<script>
$(function(){
$('#title').click(function(){
alert('点击了');
});
})
});
</script>
</body>

</html>

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访问路径：http://localhost:8080/web/index

WebController：进入首页的控制器：

package com.roncoo.education.controller;

import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;

/**
* spring-boot-demo-12-1
*
* @author wujing
*/
@Controller
@RequestMapping(value = "/web")
public class WebController {

@RequestMapping(value = "index")
public String index(ModelMap map) {
map.put("title", "freemarker hello word");
return "index"; // 开头不要加上/，linux下面会出错
}

}

文件上传的控制器：FileController

package com.roncoo.education.controller;

import java.io.File;
import java.io.IOException;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

/**
* spring-boot-demo-12-1
*
* @author wujing
*/
@Controller
@RequestMapping(value = "/file")
public class FileController {

private static final Logger logger = LoggerFactory.getLogger(FileController.class);

@RequestMapping(value = "upload")
@ResponseBody
public String upload(@RequestParam("roncooFile") MultipartFile file) {
if (file.isEmpty()) {
return "文件为空";
}

// 获取文件名
String fileName = file.getOriginalFilename();
logger.info("上传的文件名为：" + fileName);

// 获取文件的后缀名
String suffixName = fileName.substring(fileName.lastIndexOf("."));
logger.info("上传的后缀名为：" + suffixName);

// 文件上传路径
String filePath = "d:/roncoo/ttt/";

// 解决中文问题，liunx下中文路径，图片显示问题
// fileName = UUID.randomUUID() + suffixName;

File dest = new File(filePath + fileName);

// 检测是否存在目录
if (!dest.getParentFile().exists()) {
dest.getParentFile().mkdirs();
}

try {
file.transferTo(dest);
return "上传成功";
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return "上传失败";
}

}

效果：

SpringBoot--文件上传

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