1. 方式一 直接在线生成

https://dwz.cn/

2. 方式二 调用接口生成

引入gson-2.8.5.jar

可以通过maven仓库搜索下载地址

http://central.maven.org/maven2/com/google/code/gson/gson/2.8.5/gson-2.8.5.jar

import com.google.gson.annotations.SerializedName;/*** @program: javaTest1.8* @description: 响应结果* @author: Mr.Wang* @create: 2019-05-31 12:56**/
public class UrlResponse {//@SerializedName注解来将对象里的属性跟json里字段对应值匹配起来。@SerializedName("Code")private int code;@SerializedName("ErrMsg")private String errMsg; //错误信息@SerializedName("LongUrl")private String longUrl; //长网址（原网址）@SerializedName("ShortUrl")private String shortUrl;   //短网址public int getCode() {return code;}public void setCode(int code) {this.code = code;}public String getErrMsg() {return errMsg;}public void setErrMsg(String errMsg) {this.errMsg = errMsg;}public String getLongUrl() {return longUrl;}public void setLongUrl(String longUrl) {this.longUrl = longUrl;}public String getShortUrl() {return shortUrl;}public void setShortUrl(String shortUrl) {this.shortUrl = shortUrl;}}

public enum StatusCodeEnum {// 0：正常返回短网址  -1：短网址生成失败 -2：长网址不合法  -3：长网址存在安全隐患 -4：长网址插入数据库失败 -5：长网址在黑名单中，不允许注册NORMAl(0,"正常"),FAIL(-1,"短网址生成失败"),WRONGFUL(-2,"长网址不合法"),NOTSAFE(-3,"长网址存在安全隐患"),INSERTFAIL(-4,"长网址插入数据库失败"),BLACKLIST(-5,"长网址在黑名单中，不允许注册");private Integer code;private String message;public Integer getCode() {return code;}public String getMessage() {return message;}StatusCodeEnum(Integer code, String message) {this.code = code;this.message = message;}}

import java.io.IOException;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import com.google.gson.Gson;/*** @program: javaTest1.8* @description: 百度短网址生成接口* @author: Mr.Wang* @create: 2019-05-31 12:51**/
public class BaiduDwz {final static String CREATE_API = "https://dwz.cn/admin/v2/create";final static String TOKEN = "你的token"; // TODO:设置Token/*** 创建短网址** @param longUrl*            长网址：即原网址* @return  成功：短网址*          失败：返回对于的错误信息*/public static String createShortUrl(String longUrl) {String params = "{\"url\":\""+ longUrl + "\"}";String msg=null;BufferedReader reader = null;try {// 创建连接URL url = new URL(CREATE_API);HttpURLConnection connection = (HttpURLConnection) url.openConnection();connection.setDoOutput(true);connection.setDoInput(true);connection.setUseCaches(false);connection.setInstanceFollowRedirects(true);connection.setRequestMethod("POST"); // 设置请求方式connection.setRequestProperty("Content-Type", "application/json"); // 设置发送数据的格式connection.setRequestProperty("Token", TOKEN); // 设置发送数据的格式");// 发起请求connection.connect();OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream(), "UTF-8"); // utf-8编码out.append(params);out.flush();out.close();// 读取响应reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));String line;String res = "";while ((line = reader.readLine()) != null) {res += line;}reader.close();// 利用gson将字符串转换成对象UrlResponse urlResponse = new Gson().fromJson(res, UrlResponse.class);if (urlResponse.getCode() == 0) {msg = urlResponse.getShortUrl();} else {//循环输出值for (StatusCodeEnum e : StatusCodeEnum.values()) {if (urlResponse.getCode() == e.getCode() ){msg =e.getMessage();}}}//return ""; // TODO：自定义错误信息} catch (IOException e) {// TODOe.printStackTrace();}//return ""; // TODO：自定义错误信息return msg;}public static void main(String[] args) {String res = createShortUrl("http://news.cctv.com/2019/05/30/ARTIKUzYcEgVHC4KFr2pbNo9190530.shtml");// https://dwz.cn/1xgMBFRVSystem.out.println(res);}}