以下代码(下方)可以正常工作并完成工作。但我真正喜欢做的是进行我的REST调用,内部解析(如果需要),并从那里获取/应用我的JSONObject值,而不必先将我的JSON返回结果写入文本文件。基本上我希望得到相同的结果,而不必在我的过程中从文本文件中写入和读取JSON。
似乎有几个选项可以做到这一点。但到目前为止,我没有尝试过任何工作,也没有理解我的理解。在我目前不了解的当前库中也可能有一个简单的解决方法。任何帮助,告诉我如何改变我的代码来实现这一点将不胜感激。
代码:
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import org.apache.commons.io.output.TeeOutputStream;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.HttpClientBuilder;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;
public class Account {
public static void main(String[] args) {
File f = new File(
"/Users/name/restLog.txt");
if (!f.exists()) {
try {
f.createNewFile();
} catch (Exception e) {
e.printStackTrace();
}
}
try {
FileOutputStream fos = new FileOutputStream(f);
TeeOutputStream myOut = new TeeOutputStream(System.out, fos);
PrintStream ps = new PrintStream(myOut);
System.setOut(ps);
} catch (Exception e) {
e.printStackTrace();
}
try {
// create HTTP Client
HttpClient httpClient = HttpClientBuilder.create().build();
// create new getRequest
HttpGet getRequest = new HttpGet(
"http://www.asite.com");
HttpResponse response = httpClient.execute(getRequest);
// check 200 response was successful
if (response.getStatusLine().getStatusCode() != 200) {
throw new RuntimeException("Failed : HTTP error code : "
+ response.getStatusLine().getStatusCode());
}
// Get-Capture Complete application/JSON body response
BufferedReader br = new BufferedReader(new InputStreamReader(
(response.getEntity().getContent())));
String output;
// Simply iterate through JSON response and show on console.
while ((output = br.readLine()) != null) {
System.out.println(output);
JSONParser parser = new JSONParser();
Object obj = parser
.parse(new FileReader(
"/Users/name/restLog.txt"));
JSONObject jsonObject = (JSONObject) obj;
JSONObject accountObject = (JSONObject) jsonObject
.get("account");
String email = (String) accountObject.get("email");
Long id = (Long) accountObject.get("id");
System.out.println("My id is " + id);
System.out.println("My email is " + email);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ParseException e) {
e.printStackTrace();
}
}
}
答案 0 :(得分:0)
您必须实现自己的对象modell才能使用ObjectMapper解析respone,如:
ObjectMapper mapper = new ObjectMapper();
YourObject object = mapper.readValue(response.getEntity().getContent());
此对象必须包含JSON带注释的字段,如:
@JsonProperty("userName")
private String userName;
然后您可以为您的字段生成getter / setter对。如果json属性是json数组,那么你必须创建一个java列表对象。如果您在Java EE中工作,您甚至不需要注释,映射就可以在不需要注释字段的情况下进行。另请查看Jackson。