simple http post request in java with json post parameters

Question

Hi i have no idea about java, but for testing purpose i need some code to do http post request with json parameters in java. I have collected few examples and written the code below but its not working.

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 com.google.gson.Gson; public class pojo1 { String name=abc; String age=18; //generate setter and getters } public class SimpleURL { String postUrl="www.site.com";// put in your url Gson gson= new Gson(); HttpPost post = new HttpPost(postUrl); StringEntity postingString =new StringEntity(gson.toJson(pojo1)); //convert to json post.setEntity(postingString); post.setHeader("Content-type","application/json"); HttpResponse response = httpClient.execute(post); }

File name: SimpleURL.java compilation in linux: javac SimpleURL.java Error:

SimpleURL.java:22: <identifier> expected post.setEntity(postingString); ^ SimpleURL.java:22: <identifier> expected post.setEntity(postingString); ^ SimpleURL.java:23: <identifier> expected post.setHeader("Content-type","application/json"); ^ SimpleURL.java:23: illegal start of type post.setHeader("Content-type","application/json"); ^ SimpleURL.java:23: illegal start of type post.setHeader("Content-type","application/json"); ^

explain more what you wanted to do

Divya
– Divya

2014-03-31 12:46:51 +00:00
Commented Mar 31, 2014 at 12:46 — Divya
– Divya, Commented Mar 31, 2014 at 12:46

cheseaux · Accepted Answer · 2014-03-31 12:52:28Z

Your code doesn't compile. In order to compile, you just need to put the code from SimpleURL in a main method as following :

public class SimpleURL{ public static void main(String[] args) { String postUrl="www.site.com";// put in your url Gson gson= new Gson(); HttpPost post = new HttpPost(postUrl); StringEntity postingString =new StringEntity(gson.toJson(pojo1)); //convert to json post.setEntity(postingString); post.setHeader("Content-type","application/json"); HttpResponse response = httpClient.execute(post); } }

You also need to change www.site.com to be the target website. pojo1 should not be declared public. You can keep it in the same file though.

gjambet · Accepted Answer · 2014-03-31 12:50:31Z

0

your code does not compile, probably because you've defined 2 public class in the same file.

public class pojo1 public class SimpleURL

answered Mar 31, 2014 at 12:50

gjambet

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2 Comments

Naggappan Ramukannan Over a year ago

i have done necessary changes still i get the error, pastebin.com/pmEggF94

gjambet Over a year ago

you should have two java files one to declare yout pojo1 class in a file named pojo1.java, and the other for SimpleURL in in a file named SimpleURL.java

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