在 Java 中使用 JSON 的 HTTP POST
我想在Java中使用JSON制作一个简单的HTTP POST。
假设网址是www.site.com
例如,它采用标记为的值。{"name":"myname","age":"20"}
'details'
如何为 POST 创建语法?
我似乎也无法在JSON Javadocs中找到POST方法。
我想在Java中使用JSON制作一个简单的HTTP POST。
假设网址是www.site.com
例如,它采用标记为的值。{"name":"myname","age":"20"}
'details'
如何为 POST 创建语法?
我似乎也无法在JSON Javadocs中找到POST方法。
以下是您需要执行的操作:
HttpClient
HttpPost
application/x-www-form-urlencoded
StringEntity
代码大致看起来像这样(您仍然需要调试它并使其工作):
// @Deprecated HttpClient httpClient = new DefaultHttpClient();
HttpClient httpClient = HttpClientBuilder.create().build();
try {
HttpPost request = new HttpPost("http://yoururl");
StringEntity params = new StringEntity("details={\"name\":\"xyz\",\"age\":\"20\"} ");
request.addHeader("content-type", "application/x-www-form-urlencoded");
request.setEntity(params);
HttpResponse response = httpClient.execute(request);
} catch (Exception ex) {
} finally {
// @Deprecated httpClient.getConnectionManager().shutdown();
}
您可以使用 Gson 库将 java 类转换为 JSON 对象。
按照上面的示例,为要发送的变量创建一个 pojo 类
{"name":"myname","age":"20"}
成为
class pojo1
{
String name;
String age;
//generate setter and getters
}
一旦你在pojo1类中设置了变量,你可以使用以下代码发送
String postUrl = "www.site.com";// put in your url
Gson gson = new Gson();
HttpClient httpClient = HttpClientBuilder.create().build();
HttpPost post = new HttpPost(postUrl);
StringEntity postingString = new StringEntity(gson.toJson(pojo1));//gson.tojson() converts your pojo to json
post.setEntity(postingString);
post.setHeader("Content-type", "application/json");
HttpResponse response = httpClient.execute(post);
这些是进口
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClientBuilder;
对于GSON
import com.google.gson.Gson;