文件上传功能代码片段
Controller：
@RequestMapping(value = "/add",method = RequestMethod.POST)
public String add(Material material, HttpServletRequest request) {
this.copyFileAndSaveFile(request, material);
this.materialService.save(material);
return "redirect:/material";
}
private void copyFileAndSaveFile(HttpServletRequest request, com.boventech.jd100.entity.Material material) {
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
for (Map.Entry<String, MultipartFile> entity : multipartRequest.getFileMap().entrySet()) {
MultipartFile mf = entity.getValue();
String uuid = UUID.randomUUID().toString();
String ext = null;
try {
if (null == mf || mf.isEmpty() || null == mf.getInputStream() || mf.getSize() > 40000000) {
return;
}
ext = Files.getFileExtension(mf.getOriginalFilename());
File f = new File(APPPropertiesReader.getProperty(FILEPATH) + uuid + "." + ext);
Files.createParentDirs(f);
FileCopyUtils.copy(mf.getBytes(), f);
material.setFilePath(APPPropertiesReader.getProperty(FILEPATH) + uuid + "." + ext);
material.setFileName(mf.getOriginalFilename());
} catch (IOException e) {
e.printStackTrace();
}
}
}
serviceImpl:
@Override
public void save(Material material) {
this.materialDao.save(material);
}
jsp:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE HTML>
<html>
<head>
<script type="text/javascript" src="<c:url value='/resources/js/jquery.placeholder.js'/>"></script>
<script type="text/javascript" src="<c:url value='/resources/js/input.placeholder.js'/>"></script>
<script type="text/javascript" src="<c:url value='/resources/js/material/add.js'/>"></script>
<title>首页编辑</title>
</head>
<body>
<form action = "<c:url value = "/admin/add"></c:url>" method = "post" id="add_form" enctype="multipart/form-data">
<table class="tab01">
<tr>
<td class="name">标题：</td>
<td><input type="text" class="text_input" name="title" placeholder="标题"/></td>
<td><label for="title" class="error" generated="true" style="color:red;font-size:12px;"></label></td>
</tr>
<tr>
<td class="name">备注：</td>
<td><input type="text" class="text_input" name="remark" placeholder="备注"/></td>
<td><label for="remark" class="error" generated="true" style="color:red;font-size:12px;"></label></td>
</tr>
<tr>
<td class="name">上传文件：</td>
<td><input type="file" class="text_input" name="file" accept= "video/*" placeholder="上传文件"/><span class='error' generated='true' style='color: red; font-size: 12px;'>*文件大小为30M以下</span> </td>
<td><label for="file" class="error" generated="true" style="color:red;font-size:12px;"></label></td>
</tr>
<tr>
<td> </td>
<td colspan="2">
<input type="submit" class="button" id="submitButton" value="提交" name="reset" />
<input type="reset" class="button" value="重置" name="reset" />
</td>
</tr>
</table>
</form>
</body>
</html>
Meterial.java
@Entity
@Table(name="material")
public class Material implements Serializable{
private static final long serialVersionUID = -8583022687535428265L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String title;
private String remark;
private String fileName;
private String filePath;
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getRemark() {
return remark;
}
public void setRemark(String remark) {
this.remark = remark;
}
public String getFileName() {
return fileName;
}
public void setFileName(String fileName) {
this.fileName = fileName;
}
public String getFilePath() {
return filePath;
}
public void setFilePath(String filePath) {
this.filePath = filePath;
}
public Long getId() {
return id;
}
}
app.properties
#filePath = C\:\\MyJob\\edoc\\ materialFilePath =/Users/sunhu/jd100/material/
特别注意的是js必须要加载进去！！！
上面的js文件和APPPropertiesReader.java在资源中
以上是上传视频的，如果无限制则删除 accept= "video/*"