更加详细内容请查看：
Retrofit学习之文件和参数上传 - 简书 (jianshu.com)
你真的会用Retrofit2吗?Retrofit2完全教程 - Honnnnl - 博客园 (cnblogs.com)，
官网：Retrofit (square.github.io)
以下仅作笔记处理：
*\JFXTools\pom.xml
<!-- retrofit2请求(客户端请求API)依赖 -->
<dependency>
<groupId>com.squareup.retrofit2</groupId>
<artifactId>retrofit</artifactId>
<version>2.11.0</version>
</dependency>
<!-- 示例使用jackson的converter -->
<dependency>
<groupId>com.squareup.retrofit2</groupId>
<artifactId>converter-jackson</artifactId>
<version>2.11.0</version>
</dependency>
<!-- 注：在Java22中会报"java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/util/JacksonFeature"错误，添加fasterxml即可 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.11.0</version>
</dependency>
*\JFXTools\src\main\java\base\RetrofitService.java
package Service; import bean.RiZhiModel; import okhttp3.MultipartBody; import retrofit2.Call; import retrofit2.http.*; /** 处理retrofit2请求接口 **/ public interface RetrofitService { @GET("api/Public/GetServerTime") Call<Object> getServerTime(); /** Get请求传递参数 */ @GET("api/Public/GetServerTime") Call<Object> getServerTime(@Query("id") int id); /** post请求传递参数 */ @POST("api/Public/GetServerTime") Call<Object> getServerTime(@Body RiZhiModel model); /** 使用HTTP可以替代GET/POST/PUT/DELETE等请求方式，不过需要指定其类型 * method 表示请求的方法，区分大小写 * path表示路径 * hasBody表示是否有请求体 * */ @HTTP(method = "GET", path = "api/Public/GetServerTime/{id}/user", hasBody = false) Call<Object> getServerTime(@Path("id") String id); /** 上传文件案例 * @FormUrlEncoded相当于指定一个From表单请求，就是Content-Type:application/x-www-form-urlencoded * @Multipart则表示使用Content-Type为“multipart/form-data” * */ @Multipart @POST("api/Public/uploadFile") Call<Object> uploadFile(@Body RiZhiModel model,@Part MultipartBody.Part files); /** @Headers/@Header表示添加请求头处理 * */ @GET("api/Public/GetServerTime1") @Headers({"CustomHeader1: customHeaderValue1", "CustomHeader2: customHeaderValue2"}) Call<Object> getServerTime1(@Header("CustomHeader3") String customHeaderValue3); /** @Url表示指定执行的URL后缀，@Query表示指定的执行条件 * 对于：http://172.16.41.221:10101/web_fscmodule/api/Public/GetServerTime2?queryStr=1 * @Url相当于：api/Public/GetServerTime2 * @Query相当于:queryStr=1。 * 注：上述调用getServerTime2实际填写如下：getServerTime2("api/Public/GetServerTime2",1) * **/ @GET("api/Public/GetServerTime2") Call<Object> getServerTime2(@Url String url, @Query("queryStr") String queryStr); }
*\JFXTools\src\main\java\bean\RiZhiModel.java
package bean; import org.joda.time.DateTime; /* * 日志模型 * */ public class RiZhiModel {// 打印时间 public String printTime = DateTime.now().toString("yyyy-MM-dd HH:mm:ss"); // 错误信息 public String errMsg; }
*\JFXTools\src\main\java\base\RunRetrofit2Interceptor.java
package base; import okhttp3.Interceptor; import okhttp3.Request; import okhttp3.Response; import org.jetbrains.annotations.NotNull; import org.joda.time.DateTime; import java.io.IOException; /** 模拟拦截器功能，本案例模拟的是在请求头添加数据 */ public class RunRetrofit2Interceptor implements Interceptor { @NotNull @Override public Response intercept(@NotNull Chain chain) throws IOException { Request request = chain.request(); Request.Builder builder = request.newBuilder(); builder.addHeader("sign", String.valueOf(DateTime.now().getMillis())); request = builder.build(); return chain.proceed(request); } }
*\JFXTools\src\main\java\Controllers.java
/** retrofit2案例 */ public void runRetrofit2Demo(){ new Thread(()->{ try{ // 定义OkHttpClient OkHttpClient tempOkHttpClient=new OkHttpClient().newBuilder() // 设置超时时间 .connectTimeout(3,TimeUnit.SECONDS) // 设置读取超时时间 .readTimeout(3,TimeUnit.SECONDS) // 添加拦截器 .addInterceptor(new RunRetrofit2Interceptor()) .build(); // 定义Retrofit Retrofit retrofit = new Retrofit.Builder() // 注：baseUrl必须以"/"结尾，否则将会报错 .baseUrl("http://172.16.41.221:10101/web_fscmodule/") // 与OkHttpClient搭配使用 .client(tempOkHttpClient) // addConverterFactory支持GsonConverter和JacksonConverter两种方式，本例子使用的是JacksonConverter .addConverterFactory(JacksonConverterFactory.create()) .build(); RetrofitService retrofitService = retrofit.create(RetrofitService.class); Call<Object> call = retrofitService.getServerTime(); // 同步处理 try { Object result = call.execute().body(); System.out.println(result); } catch (IOException e) { e.printStackTrace(); } // 异步处理 call.enqueue(new Callback<Object>() { @Override public void onResponse(Call<Object> call, Response<Object> response) { System.out.println("执行是否成功："+response.isSuccessful()); Object result = response.body(); System.out.println(result); } @Override public void onFailure(Call<Object> call, Throwable throwable) { // 执行失败处理 } }); /** 文件上传 Retrofit retrofit = new Retrofit.Builder() .baseUrl("http://172.16.41.221:10101/web_fscmodule/") .addConverterFactory(JacksonConverterFactory.create()) .build(); RetrofitService retrofitService = retrofit.create(RetrofitService.class); // 参数信息 RiZhiModel tempRiZhiInfo=new RiZhiModel(); tempRiZhiInfo.errMsg="具体参数内容"; ** 可以使用这种方式上传 * MediaType textType = MediaType.parse("text/plain"); * RequestBody errMsg = RequestBody.create(textType, "具体参数内容"); * * // 上传文件信息 RequestBody file = RequestBody.create(MediaType.parse("application/octet-stream"), "这里是模拟文件的内容"); MultipartBody.Part filePart = MultipartBody.Part.createFormData("file", "test.txt", file); Call<Object> call = retrofitService.uploadFile(tempRiZhiInfo,filePart); try { Object result = call.execute().body(); System.out.println(result); } catch (IOException e) { e.printStackTrace(); } */ }catch (Exception err){ System.out.println(Thread.currentThread().getName()+"，执行Runnable异常:"+err.getMessage()); } },"runRetrofit2DemoThread").start(); }
输出：
"C:\Program Files\Java\jdk1.8.0_201\bin\java.exe" -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:16763,suspend=y,server=n -javaagent:C:\Users\namejr\AppData\Local\JetBrains\IntelliJIdea2023.2\captureAgent\debugger-agent.jar=file:/C:/Users/namejr/AppData/Local/Temp/capture.props -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_201\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_201\jre\lib\resources.jar;C:\Program 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IDEA 2023.2.2\lib\idea_rt.jar" JFXToolMain 已连接到地址为 ''127.0.0.1:16763'，传输: '套接字'' 的目标虚拟机 {Data=2024-06-13 16:24:51, Status=1, StatusDescription=获取数据成功, DataCount={TotalCount=1}} 已与地址为 ''127.0.0.1:16763'，传输: '套接字'' 的目标虚拟机断开连接 进程已结束，退出代码为 -1
请求案例记录：
客户端：
MultipartBody.Builder multipartBodyBuilder = new MultipartBody.Builder(); multipartBodyBuilder.setType(MultipartBody.FORM); multipartBodyBuilder.addFormDataPart("title", title); multipartBodyBuilder.addFormDataPart("content", content); multipartBodyBuilder.addFormDataPart("uid", ClientRunUtil.userInfo.userName); for(String fileInfo:fileInfos){ File tempFileHandel=new File(fileInfo); if(tempFileHandel.exists()){ multipartBodyBuilder.addFormDataPart("uploadFile", tempFileHandel.getName(), RequestBody.create(MediaType.parse("multipart/form-data"), tempFileHandel)); } } RequestBody requestBody = multipartBodyBuilder.build(); String tempBasePathUrl= ClientRunUtil.prevAddr+(ClientRunUtil.prevAddr.endsWith("/")?"Web_ClothSystem/":"/Web_ClothSystem/"); if(testButtonStatus==1){ tempBasePathUrl= "http://127.0.0.1:8081/"; } // 定义OkHttpClient OkHttpClient tempOkHttpClient=new OkHttpClient().newBuilder().connectTimeout(30, TimeUnit.SECONDS).readTimeout(30,TimeUnit.SECONDS).build(); // 定义Retrofit Retrofit retrofit = new Retrofit.Builder().baseUrl(tempBasePathUrl).client(tempOkHttpClient).addConverterFactory(JacksonConverterFactory.create()).build(); WebClothSysService retrofitService = retrofit.create(WebClothSysService.class); Call<Object> call = retrofitService.uploadFeedBackFiles(requestBody); // 同步处理 String tempBackInfo = JSON.toJSONString(call.execute().body()); if(StringUtils.isNotBlank(tempBackInfo)){ ApiResponse<Boolean> tempBackSecCodeInfos=JSONObject.parseObject(tempBackInfo, new TypeReference<>() {}); if(tempBackSecCodeInfos!=null){ return tempBackSecCodeInfos.data; } }
package com.namejr.service; import okhttp3.RequestBody; import retrofit2.Call; import retrofit2.http.Body; import retrofit2.http.GET; import retrofit2.http.POST; import retrofit2.http.Query; public interface WebClothSysService { @GET("api/Config/getDBConfig") Call<Object> getDBConfig(@Query("uName") String uName); @POST("api/Public/uploadFeedBackFiles") Call<Object> uploadFeedBackFiles(@Body RequestBody parts); }
服务端：
@RequestMapping(value = "/uploadFeedBackFiles", method = RequestMethod.POST,produces = "application/json;charset=UTF-8") @Operation(summary = "上传文件") @Parameters({@Parameter(in = ParameterIn.HEADER, description = "上传名称", name = "userName")}) public ApiResponse<Boolean> uploadFeedBackFiles(HttpServletRequest req, @RequestParam("uploadFile") MultipartFile[] uploadFiles) { ApiResponse<Boolean> _data = new ApiResponse<>(); try { String title = req.getParameter("title"); String content = req.getParameter("content"); String uid = req.getParameter("uid"); _data.data = pServiceImpl.uploadFeedBackFiles(title,content,uid,uploadFiles); _data.status=_data.data?1:0; _data.statusDescription = "上传文件成功"; _data.totalCount=1; } catch (Exception err) { _data.status=-1; _data.data=false; _data.statusDescription=err.getMessage(); _data.totalCount=0; logServiceImpl.writeLogInfos(Thread.currentThread().getStackTrace()[1].getMethodName(), err); } return _data; }
public boolean uploadFeedBackFiles(String title,String content,String uname,MultipartFile[] uploadFiles) throws Exception{ List<String> tempBackPathUrls=new ArrayList<>(); for(MultipartFile uploadFile:uploadFiles){ String tempBackPathUrl=dealSaveFilesInfos(uploadFile); if(StringUtils.isNotBlank(tempBackPathUrl)){ tempBackPathUrls.add(tempBackPathUrl); } } logServiceImpl.writeLogInfos(Thread.currentThread().getStackTrace()[1].getMethodName(), new Exception("title:"+title+",content:"+content+",uname:"+uname+",tempBackPathUrls:"+ JSON.toJSONString(tempBackPathUrls))); return true; } /* * 保存上传文件 * */ private String dealSaveFilesInfos(MultipartFile uploadFile) throws Exception { String oldName = uploadFile.getOriginalFilename(); String tempFileType = null; if (oldName != null) { tempFileType = oldName.substring(oldName.lastIndexOf(".")); } List<String> uploadPathTypes = Arrays.asList(uploadPathType.split("\\|", -1)); if (!uploadPathTypes.contains(tempFileType)) { throw new Exception("上传文件类型不对"); } String uploadParentPath = ResourceUtils.getURL("classpath:").getPath(); uploadParentPath+="META-INF/resources/"; File folder = new File(uploadParentPath + uploadPath); if (!folder.isDirectory()) { folder.mkdirs(); } // SimpleDateFormat sdf1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String newName = DateTime.now().toString("yyyy_MM_dd_HH_mm_ss") + tempFileType; uploadFile.transferTo(new File(folder, newName)); return uploadPath + "/" + newName; }
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