我想将文件发送到 web 服务，但我需要发送更多信息，所以我想用 json 发送它们。但是当我在我的 jsonObject 中放入一个文件时，我得到一个错误，说它不是一个字符串。我的问题是，我是否应该将我的文件转换为字符串，然后放入我的 json 并在网络服务上将其转换为文件？或者还有其他简单的方法吗？
这是我的代码：
客户：
private void send() throws JSONException{
ClientConfig config = new DefaultClientConfig();
Client client = Client.create(config);
client.addFilter(new LoggingFilter());
WebResource service = client.resource("http://localhost:8080/proj/rest/file/upload_json");
JSONObject my_data = new JSONObject();
File file_upload = new File("C:/hi.txt");
my_data.put("User", "Beth");
my_data.put("Date", "22-07-2013");
my_data.put("File", file_upload);
ClientResponse client_response = service.accept(MediaType.APPLICATION_JSON).post(ClientResponse.class, my_data);
System.out.println("Status: "+client_response.getStatus());
client.destroy();
}
网络服务
@POST
@Path("/upload_json")
@Consumes(MediaType.APPLICATION_JSON)
@Produces("text/plain")
public String receive(JSONObject json) throws JSONException {
//Here I'll save my file and make antoher things..
return "ok";
}
在所有答案之后，这是我的代码 - 谢谢大家：
网络服务
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import org.codehaus.jettison.json.JSONException;
import org.codehaus.jettison.json.JSONObject;
import com.sun.jersey.core.util.Base64;
@Path("/file")
public class ReceiveJSONWebService {
@POST
@Path("/upload_json")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public JSONObject receiveJSON(JSONObject json) throws JSONException, IOException {
convertFile(json.getString("file"), json.getString("file_name"));
//Prints my json object
return json;
}
//Convert a Base64 string and create a file
private void convertFile(String file_string, String file_name) throws IOException{
byte[] bytes = Base64.decode(file_string);
File file = new File("local_path/"+file_name);
FileOutputStream fop = new FileOutputStream(file);
fop.write(bytes);
fop.flush();
fop.close();
}
}
客户
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import javax.ws.rs.core.MediaType;
import org.codehaus.jettison.json.JSONException;
import org.codehaus.jettison.json.JSONObject;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.client.config.ClientConfig;
import com.sun.jersey.api.client.config.DefaultClientConfig;
import com.sun.jersey.api.client.filter.LoggingFilter;
import com.sun.jersey.core.util.Base64;
import com.sun.jersey.multipart.FormDataMultiPart;
import com.sun.jersey.multipart.file.FileDataBodyPart;
import com.sun.jersey.multipart.impl.MultiPartWriter;
public class MyClient {
public static void main(String[] args) throws JSONException, IOException
{
MyClient my_client = new MyClient();
File file_upload = new File("local_file/file_name.pdf");
my_client.sendFileJSON(file_upload);
}
private void sendFileJSON(File file_upload) throws JSONException, IOException{
ClientConfig config = new DefaultClientConfig();
Client client = Client.create(config);
client.addFilter(new LoggingFilter());
WebResource service = client.resource("my_rest_address_path");
JSONObject data_file = new JSONObject();
data_file.put("file_name", file_upload.getName());
data_file.put("description", "Something about my file....");
data_file.put("file", convertFileToString(file_upload));
ClientResponse client_response = service.accept(MediaType.APPLICATION_JSON).post(ClientResponse.class, data_file);
System.out.println("Status: "+client_response.getStatus());
client.destroy();
}
//Convert my file to a Base64 String
private String convertFileToString(File file) throws IOException{
byte[] bytes = Files.readAllBytes(file.toPath());
return new String(Base64.encode(bytes));
}
}