框架构建rest webservice"/>
利用resteasy框架构建rest webservice
因为工作原因,很久时间木有更新了,不怕有时间久继续更新:
基本的resteasy的搭建详情请看第一、二波,我这里指的上传是指利用resteasy来获取:客户端HTTP开发包发送的body请求-----刚开始也没撒头绪,第一时间去google,发现有哥们问同样的问题,但是却没有解决方法,于是乎就只有硬着头皮看英文文档,发现如下文档:
The @Context annotation allows you to inject instances of javax.ws.rs.core.HttpHeaders, javax.ws.rs.core.UriInfo, javax.ws.rs.core.Request, javax.servlet.HttpServletRequest, javax.servlet.HttpServletResponse, javax.servlet.ServletConfig, javax.servlet.ServletContext, and javax.ws.rs.core.SecurityContext objects.
翻译下呢就是说使用@Context 注解就可以将 javax.ws.rs.core.HttpHeaders, javax.ws.rs.core.UriInfo, javax.ws.rs.core.Request, javax.servlet.HttpServletRequest, javax.servlet.HttpServletResponse, javax.servlet.ServletConfig, javax.servlet.ServletContext, and javax.ws.rs.core.SecurityContext等等实例注入到变量中
server端resource类代码如下:
@PUT@Path(value = "/{folder}/{fileName}")public Response uploadFile(@PathParam("folder") String folder,@PathParam("fileName") String fileName, @Context HttpServletRequest request){File f = new File("x:\\"+fileName);InputStream is = null;try {is = request.getInputStream();FileUtils.copyInputStreamToFile(is, f);} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}return Response.ok().build();}
请主要看下以上代码红色部分,就相当于把HttpServletRequest请求注入到了request变量中,那么通过request对象获取获取输入流,则得到了body主体部分的数据。
客户端的代码如下
String urlResouce = "http://localhost:8080/cloud-storeage-boss/muluSDF/xyz.png"; // create URLFile localFile = new File("C:\\Users\\maomao\\Pictures\\2.png");try{HttpURLConnection urlConnection =(HttpURLConnection) (new URL(urlResouce)).openConnection();urlConnection.setDoInput(true);urlConnection.setDoOutput(true);urlConnection.setRequestMethod("PUT");OutputStream urlOutputStream = urlConnection.getOutputStream();FileInputStream fileInputStream = new FileInputStream(localFile);IOUtils.copy(fileInputStream, urlOutputStream);fileInputStream.close();urlOutputStream.close();System.out.println(urlConnection.getResponseCode());}catch(Exception e){e.printStackTrace();}
通过此客户端的调用,就可以将本地的2.png文件上传到服务器,并被保存为xyz.png.
上传就是如此的简单,如果大家有兴趣,下一波会讲讲form方式的提交上传或者下载文件
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利用resteasy框架构建rest webservice
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