restful服务端及客户端开发

1、WORDWORDRestful服务端及客户端调用实例.新建web工程作为服务端创建服务端代码前情提示:GET（SELECT）：从服务器取出资源（一项或多项）。POST（CREATE）：在服务器新建一个资源。PUT（UPDATE）：在服务器更新资源（客户端提供改变后的完整资源）。PATCH（UPDATE）：在服务器更新资源（客户端提供改变的属性）。DELETE（DELETE）：从服务器删除资源。.服务端代码（每个方法前有注释，包括单参数，多参数，post，get方式的例子）package.eviac.blog.restws;importjavax.ws.rs.Consumes;importjav

2、ax.ws.rs.DefaultValue;importjavax.ws.rs.FormParam;importjavax.ws.rs.GET;importjavax.ws.rs.POST;importjavax.ws.rs.Path;importjavax.ws.rs.PathParam;importjavax.ws.rs.Produces;importjavax.ws.rs.core.MediaType;importnet.sf.json.JSONObject;import.alibaba.fastjson.JSONArray;/*authorpavithra*/这里Path定义了类的层次

3、路径。/指定了资源类提供服务的URI路径。Path(UserInfoService)publicclassUserInfo/GET表示方法会处理HTTPGET请求GET/这里Path定义了类的层次路径。指定了资源类提供服务的URI路径。Path(/name/i)/Produces定义了资源类方法会生成的媒体类型。Produces(MediaType.TEXT_XML)/PathParam向Path定义的表达式注入URI参数值。publicStringuserName(PathParam(i)Stringi)Stringname=i;return+name+;GET/这里Path定义了类的层次路

4、径。指定了资源类提供服务的URI路径。Path(/userinfo/id)/Produces定义了资源类方法会生成的媒体类型Consumes(MediaType.APPLICATION_JSON)传jsonProduces(MediaType.APPLICATION_JSON)/PathParam向Path定义的表达式注入URI参数值。publicStringuserJson(PathParam(id)Stringid)/JSONObjectjobj=JSONObject.fromObject(id);/id=jobj.getString(id);returnname:hanzl,age:1,

5、id:+id+;/多参数测试POST/这里Path定义了类的层次路径。指定了资源类提供服务的URI路径。Path(/user2info)/Produces定义了资源类方法会生成的媒体类型Consumes(MediaType.APPLICATION_JSON)传json/多参数配置Consumes(MediaType.MULTIPART_FORM_DATA,MediaType.APPLICATION_FORM_URLENCODED)Produces(MediaType.APPLICATION_JSON)返回json/PathParam向Path定义的表达式注入URI参数值。publicStrin

6、guser2Json(FormParam(id)Stringid,FormParam(name)Stringname)System.out.println(id);System.out.println(name);returnname:+name+,age:1,id:+id+;多参数测试参数为jsonPOST/这里Path定义了类的层次路径。指定了资源类提供服务的URI路径。Path(/user3info)/Produces定义了资源类方法会生成的媒体类型Consumes(MediaType.APPLICATION_JSON)传json/多参数配置Consumes(MediaType.MULT

7、IPART_FORM_DATA,MediaType.APPLICATION_FORM_URLENCODED)Produces(MediaType.APPLICATION_JSON)返回json/PathParam向Path定义的表达式注入URI参数值。publicStringuser3Json(FormParam(id)Stringid)System.out.println(id);returnname:hanzl,age:1,id:+id+;GETPath(/age/j)Produces(MediaType.TEXT_XML)publicStringuserAge(PathParam(j)i

8、ntj)intage=intage=j;return+age+;3.配置服务端web.xml（restful接口发布地址）在web.xml中加入如下配置JerseyRESTService.sun.jersey.spi.container.servlet.ServletContainer.perty.packages.eviac.blog.restws1JerseyRESTService/rest/*4.编写客户端代码4.1新建java工程来进行服务端的第一次调用：package.eviac.blog.restclient;importjavax.ws.rs.core.MediaType;imp

9、ort.sun.jersey.api.client.Client;import.sun.jersey.api.client.ClientResponse;import.sun.jersey.api.client.WebResource;import.sun.jersey.api.client.config.ClientConfig;import.sun.jersey.api.client.config.DefaultClientConfig;/*authorpavithra*/publicclassUserInfoClientpublicstaticfinalStringBASE_URI=lo

10、calhost:8080/RestflService;publicstaticfinalStringPATH_NAME=/UserInfoService/name/;publicstaticfinalStringPATH_AGE=/UserInfoService/age/;publicstaticvoidmain(Stringargs)Stringname=Pavithra;intage=25;ClientConfigconfig=newDefaultClientConfig();Clientclient=Client.create(config);WebResourceresource=cl

11、ient.resource(BASE_URI);WebResourcenameResource=resource.path(rest).path(PATH_NAME+name);System.out.println(ClientResponsen+getClientResponse(nameResource);System.out.println(Responsen+getResponse(nameResource)+nn);WebResourceageResource=resource.path(rest).path(PATH_AGE+age);System.out.println(Clie

12、ntResponsen+getClientResponse(ageResource);System.out.println(Responsen+getResponse(ageResource);/*返回客户端请求。例如：GETlocalhost:8080/RESTfulWS/rest/UserInfoService/name/Pavithra返回请求结果状态“200OK”。*paramservicereturn*/privatestaticStringgetClientResponse(WebResourceresource)returnresource.accept(MediaType.TE

13、XT_XML).get(ClientResponse.class).toString();/*返回请求结果XML例如：Pavithra*paramservicereturn/privatestaticStringgetResponse(WebResourceresource)returnresource.accept(MediaType.TEXT_XML).get(String.class);调用结果：ClientResponseGEThttp:/localhost:BOE0/RestfiService/rest/UserlnfoService/name/Pavithrareturnedare

14、sponseResponsePavithraClientResponseGEThttp:/localhost:B0S0/RestfiService/rest/UserlnfoService/age/25returnedaresponsestatusResponse25.卡#4.2get方式还可以直接从浏览器直接调用浏览器调用：以上这些都是单纯的get方式提交的数据可使用以上这些都是单纯的get方式提交的数据可使用5.客户端调用我这有两种方式HttpURLConnectionHttpClient两不中HttpURLConnection调用restful接口代码如下：package.eviac.b

15、log.restclient;/*测试get请求方式，请求数据为单个参数，返回结果为jsonget方法提交返回数据json/importjava.io.BufferedInputStream;importjava.io.BufferedReader;importjava.io.ByteArrayOutputStream;importjava.io.IOException;importjava.io.InputStreamReader;importjava.io.PrintWriter;.HttpURLConnection;.MalformedURLException;.URL;publiccl

16、assJavaNetURLRESTFulClient/post方式publicstaticStringpostDownloadJson(Stringpath,Stringpost)URLurl=null;接口的地址path=localhost:8080/RestflService/rest/UserInfoService/userinfo;请求的参数post=id=id:11;tryurl=newURL(path);HttpURLConnectionhttpURLConnection=(HttpURLConnection)url.openConnection();httpURLConnecti

17、on.setRequestMethod(POST);/提交模式/conn.setConnectTimeout(10000);/连接超时单位毫秒/conn.setReadTimeout(2000);/读取超时单位毫秒/发送POST请求必须设置如下两行httpURLConnection.setDoOutput(true);httpURLConnection.setDoInput(true);/httpURLConnection.setRequestProperty(Content-Type,application/json;charset=utf-8);/获取URLConnection对象对应的输

18、出流PrintWriterprintWriter=newPrintWriter(httpURLConnection.getOutputStream();/发送请求参数printWriter.write(post);/post的参数xx=xx&yy=yy/Hush输出流的缓冲printWriter.flush();/开始获取数据BufferedInputStreambis=newBufferedInputStream(httpURLConnection.getInputStream();ByteArrayOutputStreambos=newByteArrayOutputStream();int

19、len;bytearr=newbyte1024;while(len=bis.read(arr)!=-1)bos.write(arr,0,len);bos.flush();bos.close();returnbos.toString(utf-8);catch(Exceptione)e.printStackTrace();returnnull;publicstaticvoidmain(Stringargs)tryStringid=123;StringtargetURL=localhost:8080/RestflService/rest/UserInfoService/userinfo/;targe

20、tURL+=id;URLrestServiceURL=newURL(targetURL);HttpURLConnectionhttpConnection=(HttpURLConnection)restServiceURL.openConnection();httpConnection.setRequestMethod(GET);/返回xml/httpConnection.setRequestProperty(Content-Type,text/plain;charset=utf-8);/返回jsonhttpConnection.setRequestProperty(Accept,applica

21、tion/json);if(httpConnection.getResponseCode()!=200)thrownewRuntimeException(HTTPGETRequestFailedwithErrorcode:+httpConnection.getResponseCode();BufferedReaderresponseBuffer=newBufferedReader(newInputStreamReader(httpConnection.getInputStream();Stringoutput;System.out.println(OutputfromServer:n);whi

22、le(output=responseBuffer.readLine()!=null)System.out.println(output);/解析jsonhttpConnection.disconnect();catch(MalformedURLExceptione)e.printStackTrace();catch(IOExceptione)e.printStackTrace();/postDownloadJson(null,null);HttpClient调用restful接口(post&get方式)代码如下：package.eviac.blog.restclient;importjava.

23、io.BufferedReader;importjava.io.IOException;importjava.io.InputStream;importjava.io.InputStreamReader;mons.httpclient.HttpClient;mons.httpclient.HttpException;mons.httpclient.NameValuePair;mons.httpclient.methods.GetMethod;mons.httpclient.methods.PostMethod;publicclassRestClientpublicstaticvoidmain(

24、Stringargs)Stringurlpost=localhost:8080/RestflService/rest/UserInfoService/user3info;Stringurlget=localhost:8080/RestflService/rest/UserInfoService/name/1;HttpClientclient=newHttpClient();/POST方法GetMethodgetmethod=newGetMethod(urlget);PostMethodmethod=newPostMethod(urlpost);NameValuePairdata=newName

25、ValuePair(id,id:11);method.setRequestBody(data);tryintstatusCode=client.executeMethod(method);if(statusCode=200)/StringstrJson=method.getResponseBodyAsString();/System.out.println(post方法=+$红)$。口)；BufferedReaderreader=newBufferedReader(newInputStreamReader(method.getResponseBodyAsStream();StringBuffe

26、rstringBuffer=newStringBuffer();Stringstr=;while(str=reader.readLine()!=null)stringBuffer.append(str);Stringts=stringBuffer.toString();System.out.println(post方法=由$);catch(HttpExceptione)e.printStackTrace();catch(IOExceptione)e.printStackTrace();执行get方法tryintstatusCode=client.executeMethod(getmethod)

27、;if(statusCode=200)StringstrJson=getmethod.getResponseBodyAsString();System.out.println(get方法=+$红)$。口)；/System.out.println(map.get(user).getUsername();catch(HttpExceptione)e.printStackTrace();catch(IOExceptione)e.printStackTrace();HttpURLConnection调用restful接口(post，多参数)服务端方法配置：/多参数测试POST/这里Path定义了类的层

28、次路径。指定了资源类提供服务的URI路径。Path(/user2info)/Produces定义了资源类方法会生成的媒体类型Consumes(MediaType.APPLICATION_JSON)/传json/多参数配置Consumes(MediaType.MULTIPART_FORM_DATA,MediaType.APPLICATION_FORM_URLENCODED)Produces(MediaType.APPLICATION_JSO1)/返回上$。/PathParam向Path定义的表达式注入URI参数值。publicStringuser2Json(FormParam(id)String

29、id,FormParam(name)Stringname)System.out.println(id);System.out.println(name);returnname:+name+,age:1,id:+id+;客户端调用：代码package.eviac.blog.restclient;importjava.io.BufferedInputStream;importjava.io.BufferedReader;importjava.io.ByteArrayOutputStream;importjava.io.IOException;importjava.io.InputStreamRea

30、der;importjava.io.PrintWriter;.HttpURLConnection;.MalformedURLException;.URL;/*authorHanlong多参数配置请求数据为为多个参数返回结果是Json放在body体里Post方法提交/publicclassTest2paraspost方式publicstaticStringpostDownloadJson(Stringpath,Stringpost)URLurl=null;path=localhost:8080/RestflService/rest/UserInfoService/user2info;post=i

31、d:11;Stringpost1=id=1&name=hanzl;tryurl=newURL(path);HttpURLConnectionhttpURLConnection=(HttpURLConnection)url.openConnection();httpURLConnection.setRequestMethod(POST);/提交模式/conn.setConnectTimeout(10000);/连接超时单位毫秒/conn.setReadTimeout(2000);/读取超时单位毫秒/发送POST请求必须设置如下两行httpURLConnection.setDoOutput(tru

32、e);httpURLConnection.setDoInput(true);/httpURLConnection.setRequestProperty(Content-Type,application/json;charset=utf-8);/获取URLConnection对象对应的输出流PrintWriterprintWriter=newPrintWriter(httpURLConnection.getOutputStream();/发送请求参数printWriter.write(post1);/post的参数xx=xx&yy=yy/flush输出流的缓冲printWriter.flush(

33、);/开始获取数据BufferedInputStreambis=newBufferedInputStream(httpURLConnection.getInputStream();ByteArrayOutputStreambos=newByteArrayOutputStream();intlen;bytearr=newbyte1024;while(len=bis.read(arr)!=-1)bos.write(arr,0,len);bos.flush();bos.close();returnbos.toString(utf-8);catch(Exceptione)e.printStackTra

34、ce();returnnull;publicstaticvoidmain(Stringargs)System.out.println(postDownloadJson(null,null);5.4HttpURLConnection调用restful接口(post，参数为json，返回参数为json)服务端多参数测试参数为jsonPOST/这里Path定义了类的层次路径。指定了资源类提供服务的URI路径。Path(/user3info)/Produces定义了资源类方法会生成的媒体类型Consumes(MediaType.APPLICATION_JSON)/传json/多参数配置Consumes

35、(MediaType.MULTIPART_FORM_DATA,MediaType.APPLICATION_FORM_URLENCODED)Produces(MediaType.APPLICATION_JSON返回飞。/PathParam向Path定义的表达式注入URI参数值。publicStringuser3Json(FormParam(id)Stringid)System.out.println(id);returnname:hanzl,age:1,id:+id+;客户端代码package.eviac.blog.restclient;importjava.io.BufferedInputStream;importjava.io.BufferedReader;importjava.io.ByteArrayOutputStream;importjava.io.IOException;importjava.io.InputStreamReader;importjava.io.PrintWriter;.HttpURLConnection;.MalformedURLException;.URL;/*authorHanlong多参数配置请求数据json返回结果是JsonP