GetJson文件 public class GetJson {

public JSONObject getHttpJson(String url, int comefrom) throws Exception {

try {

URL realUrl = new URL(url);

HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection();

connection.setRequestProperty("accept", "*/*");

connection.setRequestProperty("connection", "Keep-Alive");

connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");

// 建立实际的连接

connection.connect();

//请求成功

if (connection.getResponseCode() == 200) {

InputStream is = connection.getInputStream();

ByteArrayOutputStream baos = new ByteArrayOutputStream();

//10MB的缓存

byte[] buffer = new byte[10485760];

int len = 0;

while ((len = is.read(buffer)) != -1) {

baos.write(buffer, 0, len);

}

String jsonString = baos.toString();

baos.close();

is.close();

//转换成json数据处理

// getHttpJson函数的后面的参数1，表示返回的是json数据，2表示http接口的数据在一个()中的数据

JSONObject jsonArray = getJsonString(jsonString, comefrom);

return jsonArray;

}

} catch (MalformedURLException e) {

e.printStackTrace();

} catch (IOException ex) {

ex.printStackTrace();

}

return null;

}

public JSONObject getJsonString(String str, int comefrom) throws Exception{

JSONObject jo = null;

if(comefrom==1){

return new JSONObject(str);

}else if(comefrom==2){

int indexStart = 0;

//字符处理

for(int i=0;i

if(str.charAt(i)=='('){

indexStart = i;

break;

}

}

String strNew = "";

//分割字符串

for(int i=indexStart+1;i

strNew += str.charAt(i);

}

return new JSONObject(strNew);

}

return jo;

}

}

4.测试类 @RunWith(SpringRunner.class)

@SpringBootTest

public class DemoApplicationTests {

@Autowired

private JokeMapper jokeMapper;

@Test

public void contextLoads() {

String address="这里写你要请求的接口路径如www.baidu.com/getdata";

try {

JSONObject dayLine = new GetJson().getHttpJson(address,1);

System.out.println(dayLine);

//取得data的json数据

JSONArray json= null;

json = dayLine.getJSONArray("joke");

List list= JSON.parseArray(json.toString(),Joke.class);

System.out.println(list);

for (Joke btcoinEntity:list){ //遍历list

jokeMapper.insert(btcoinEntity); //插入数据库

}

} catch (Exception e) {

e.printStackTrace();

}

}

5.这里还有dao层接口JokeMapper、以及JokeMapper.xml、Joke(实体类，需要跟你爬取数据字一一对应)没写，可以通过逆向工程生成，最后运行test 数据成功插入数据库。                ------------参考文章https://blog.csdn.net/rui15111/article/details/80974172