json - 如果方法 validateOpco 返回 null 地图对象，我的 Rest Controller 类必须显示 Resource Not Found Exception

Question

我的服务等级：

package com.techwave.JsonObjectToHashmap.service;

import org.everit.json.schema.Schema;
import org.everit.json.schema.loader.SchemaLoader;
import org.json.JSONObject;
import org.json.JSONTokener;
import org.json.JSONArray;
import org.json.*;


import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.Reader;
import java.nio.file.FileAlreadyExistsException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Iterator;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;


import org.json.simple.parser.*;

import com.techwave.JsonObjectToHashmap.model.Data;
import com.techwave.JsonObjectToHashmap.model.OpcoData;
  
@Service
public class CreditRiskService 
{
 //public static String original1 = "";
 public static Map<String,String> mapForInputJson;
 public static String original2 = "";
 public static Map<String,String> mapForOpcJson;
 public static String opcoArray ="";
 public static Map<String,String> finalOpcoJson;
 public ArrayList<String> totalOpcosInOpcoJson;
 public static Map<String,String> equalOpcoJson;
 public HashMap<String,String> validateOpco() throws JSONException, FileNotFoundException
 {
  try
  {
   File file1 = new File(getClass().getClassLoader().getResource("CredirRisk_corainputtoIIB.json").getFile());
   if(file1.exists())
   {
    JSONTokener jsonDataFile1;
    JSONObject jsonObject1;
    jsonDataFile1 = new JSONTokener(new FileInputStream(file1));
    jsonObject1 = new JSONObject(jsonDataFile1);
    if(!JSONObject.NULL.equals(jsonObject1))
    {
     String jsonObjToString1 = (String)jsonObject1.toString();
    //original1=jsonObjToString1;
     mapForInputJson = new HashMap<String,String>();
     try
     {
      Iterator<?> keys = jsonObject1.keys();
      while (keys.hasNext())
      {
       String key = (String) keys.next();
       String value = jsonObject1.getString(key);
       //if(((mapForInputJson.get("target")) != null) || ((mapForInputJson.get("target").length()==4)))
       mapForInputJson.put(key, value);
      }
      System.out.println("mapForInputJson:" +mapForInputJson);
      System.out.println("****");
      System.out.println (mapForInputJson.get("opcode"));
     }
     catch(Exception e)
     {
      e.printStackTrace();
     }
    }
   }  
   else
   {
    System.out.println("The Cora Input Json File Does Not Exist");
   }
  } 
  catch (FileNotFoundException e) 
  {
   e.printStackTrace();
  }
  try
  {
   File file2 = new File(getClass().getClassLoader().getResource("opco.json").getFile());     
   if(file2.exists())
   {
    JSONTokener jsonDataFile2;
    JSONObject jsonObject2;
    jsonDataFile2 = new JSONTokener(new FileInputStream(file2));
    jsonObject2 = new JSONObject(jsonDataFile2);
    if(!JSONObject.NULL.equals(jsonObject2))
    {
     JSONArray jsonArray = (JSONArray) jsonObject2.get("opcodeDesc");
     System.out.println("Opcode Description Details: ");
     for(int i=0;i<jsonArray.length();i++)
     { 
      JSONObject opcodeDescriptionDetails= (JSONObject)jsonArray.get(i);
      if (!JSONObject.NULL.equals(opcodeDescriptionDetails)) 
      {
       String opcoarray = (String)opcodeDescriptionDetails.toString();
       opcoArray = opcoarray;
      }
      HashMap<String, String> map2 = new HashMap<String, String>();
      JSONObject jObject = new JSONObject(opcoArray);
      Iterator<?> keys = jObject.keys();
      while( keys.hasNext() )
      {
       String key = (String)keys.next();
       String value = jObject.getString(key); 
       map2.put(key, value);
      }
      System.out.println("MAP2 OPCODES:" +map2.get("opcode"));  
      for(int k=0;k<map2.size();k++)
      {
       finalOpcoJson=map2;
      }
      System.out.println("TikTok:" +finalOpcoJson.get("opcode"));
      System.out.println("opcode from input json file:" +mapForInputJson.get("opcode"));
      System.out.println((mapForInputJson.get("opcode")).equals (finalOpcoJson.get("opcode")));
     
      if((mapForInputJson.get("opcode")).equals(finalOpcoJson.get("opcode")))
      {
       HashMap<String,String> map3 = new HashMap<String,String>();
       map3.putAll(finalOpcoJson);
       equalOpcoJson = map3;  
      }
     }
     System.out.println("equalOpcoJson:" +equalOpcoJson );
     //System.out.println (mapForInputJson.get("opcode"));
     //System.out.println("finalOpcoJson values:" +finalOpcoJson.get("opcode"));
     //System.out.println("List of Opco in OpcoJson file:" +totalOpcosInOpcoJson);
     //System.out.println("Ping Pong:" +finalOpcoJson.get("opcode"));
    }
    //return (HashMap<String, String>) mapForInputJson;
   } 
   else
   {
    System.out.println("The Opco Json File Does Not Exist");
   }
  }
  catch(Exception e)
   {
    e.printStackTrace();
   }
   return (HashMap<String, String>) equalOpcoJson;
  }
 } 

我的休息控制器类：

import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;

import org.json.simple.parser.ParseException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

import com.techwave.JsonObjectToHashmap.exception.ResourceNotFoundException;
import com.techwave.JsonObjectToHashmap.service.CreditRiskService;

@RestController
public class CreditRiskController 
{
 @Autowired
 CreditRiskService CreditRiskService;
 @GetMapping("/creditRisk")
 private HashMap<String,String> validateOpco1() throws ParseException, IOException, ResourceNotFoundException 
 {
  return CreditRiskService.validateOpco();
 }
 /*@GetMapping("/jsonObjectToMap")
 private HashMap<String, String> getAllValidationsH() throws FileNotFoundException, ParseException  
 {
  CreditRiskService.getMatchingOpco();
  return null;
 }*/
} 

在上面的 CreditRiskController 类中，如果方法 validateOpco1() 返回 null HashMap 对象，方法 validateOpco1() 必须抛出或显示 ResourceNotFoundException。你能建议我吗？

我的 Service 类和 RestController 类如上。

标签： jsonhashmapmicroservices