Rest 提交文件
1. 前提是依赖和web.xml中jersey的servlet都配置好了
2. maven依赖库的冲突
<dependency><groupId>com.sun.jersey</groupId><artifactId>jersey-servlet</artifactId><version>1.19</version></dependency><dependency><groupId>com.sun.jersey</groupId><artifactId>jersey-client</artifactId><version>1.19</version></dependency><dependency><groupId>com.sun.jersey.contribs</groupId><artifactId>jersey-multipart</artifactId><version>1.7</version></dependency>
加上上述依赖的话会报错，要去掉。
3. 上传和下载的代码的一个例子
import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import javax.activation.MimetypesFileTypeMap;import javax.ws.rs.Consumes;import javax.ws.rs.GET;import javax.ws.rs.POST;import javax.ws.rs.Path;import javax.ws.rs.Produces;import javax.ws.rs.core.MediaType;import javax.ws.rs.core.Response;import javax.ws.rs.Consumes;import javax.ws.rs.core.MediaType;import com.sun.jersey.core.header.FormDataContentDisposition;import com.sun.jersey.multipart.FormDataParam;@Path("/files")public class FileResource {private static final String filepath = "E:/circulation-checking-rest/src/resources/download/test1.uml";private static final String serverLocation = "E:/circulation-checking-rest/src/resources/upload/";@GET@Path("download")@Consumes(MediaType.APPLICATION_JSON)@Produces(MediaType.APPLICATION_OCTET_STREAM)public Response downloadFile() {File file = new File(filepath);if (file.isFile() && file.exists()) {String mt = new MimetypesFileTypeMap().getContentType(file);String fileName = file.getName();return Response.ok(file, mt).header("Content-disposition","attachment;filename=" + fileName).header("ragma", "No-cache").header("Cache-Control", "no-cache").build();} else {return Response.status(Response.Status.NOT_FOUND).entity("下载失败，未找到该文件").build();}}@POST@Path("upload")@Consumes(MediaType.MULTIPART_FORM_DATA)@Produces("application/json")public Response uploadFile(@FormDataParam("file") InputStream fileInputStream,@FormDataParam("file") FormDataContentDisposition contentDispositionHeader) throws IOException {String fileName = contentDispositionHeader.getFileName();String t=contentDispositionHeader.getName();System.out.println(fileName+" "+t);File file = new File(serverLocation + "a.uml"); File parent = file.getParentFile(); //判断目录是否存在，不在创建 if(parent!=null&&!parent.exists()){ parent.mkdirs(); } file.createNewFile(); OutputStream outpuStream = new FileOutputStream(file);int read = 0;byte[] bytes = new byte[1024];while ((read = fileInputStream.read(bytes)) != -1) {outpuStream.write(bytes, 0, read);}outpuStream.flush();outpuStream.close();fileInputStream.close();return Response.status(Response.Status.OK).entity("Upload Success!").build();}}
4. 上传文件和下载文件的JSP页面
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"pageEncoding="ISO-8859-1"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Insert title here</title></head><body><p><a href="http://localhost:8080/circulation-checking-rest/test/files/download">Download</a><h3>Upload a File</h3><form action="http://localhost:8080/circulation-checking-rest/test/files/upload" method="post" enctype="multipart/form-data"><p>Select a file : <input type="file" name="file" /></p><input type="submit" value="Upload It" style="color: Fuchsia; "/></form></body></html>
5. 效果
上传和下载页面
点击下载
上传文件，问价名解析错误
@FormDataParam("file") InputStream fileInputStream,@FormDataParam("file") FormDataContentDisposition contentDispositionHeaderString fileName = contentDispositionHeader.getFileName();String t=contentDispositionHeader.getName();System.out.println(fileName+" "+t);
FormDataContentDisposition 这个类在解析文件的地址时，出问题了，路径中的斜杠没了。
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