使用java的语义json数组比较

Question

是否有内置库或代码可以帮助我在语义上比较两个 json 数组：

我正在运行单元测试，必须比较两个 json 数组，看看它们是否相等

Json Array1=

[{"job_name":"CE","role_name":"Excellence"},
{"job_name":"PA","role_name":"Approver"},
{"job_name":"RO","role_name":"Financial"},
{"job_name":"RP","role_name":"Publisher"},
{"job_name":"SA","role_name":"Analyst"},
{"job_name":"TS","role_name":"Supervisor"},
{"job_name":"TT","role_name":"test"},
{"job_name":"ZG","role_name":"Manager"},
{"job_name":"ZI","role_name":"Manager"},
{"job_name":"ZJ","role_name":"Manager"}]

Json Array2：

{"role_name":"Excellence","job_name":"CE"},
{"role_name":"Approver","job_name":"PA"},
{"role_name":"Financial","job_name":"RO"},
{"role_name":"Publisher","job_name":"RP"},
{"role_name":"Analyst","job_name":"SA"},
{"role_name":"Supervisor","job_name":"TS"},
{"role_name":"test","job_name":"TT"},
{"role_name":"Manager","job_name":"ZG"},
{"role_name":"Manager","job_name":"ZI"},
{"role_name":"Manager","job_name":"ZJ"}

当我使用 http://www.jsondiff.com/ 比较它时，它返回两个文件在语义上是相同的。

对于 Java 代码，我尝试使用以下两个库：

JSONCompareResult result = JSONCompare.compareJSON(Array1, Array1, 
JSONCompareMode.STRICT) :

JSONCompareResult result = JSONCompare.compareJSON(Array1, Array1, 
JSONCompareMode.LENIENT) :

另外，我尝试使用 JSON 断言： JSONAssert.assertEquals(Array1, Array1, false);

但在这两种情况下，库都将 JSON 数组标记为不同。

任何帮助或建议将不胜感激。

Answer 1

这对于你想要的可能是冗长的，我不知道有什么捷径，所以我倾向于尝试解决它。 您需要检查数组的长度是否相等，排序相同等... 但它有时可能会对某人有所帮助..

import org.json.JSONArray;
import org.json.JSONObject;

public class ClassCompareTwoJsonArrays {

private static String JSONArray1 = "[{\"job_name\":\"CE\",\"role_name\":\"Excellence\"},"
        + "{\"job_name\":\"PA\",\"role_name\":\"Approver\"},"
        + "{\"job_name\":\"RO\",\"role_name\":\"Financial\"},"
        + "{\"job_name\":\"RP\",\"role_name\":\"Publisher\"},"
        + "{\"job_name\":\"SA\",\"role_name\":\"Analyst\"},"
        + "{\"job_name\":\"TS\",\"role_name\":\"Supervisor\"},"
        + "{\"job_name\":\"TT\",\"role_name\":\"Test1\"},"
        + "{\"job_name\":\"ZG\",\"role_name\":\"Manager\"},"
        + "{\"job_name\":\"ZI\",\"role_name\":\"Manager\"},"
        + "{\"job_name\":\"ZJ\",\"role_name\":\"Manager\"}]";

private static String JSONArray2 = "{\"role_name\":\"Excellence\",\"job_name\":\"CE\"},"
        + "{\"role_name\":\"Approver\",\"job_name\":\"PA\"},"
        + "{\"role_name\":\"Financial\",\"job_name\":\"RO\"},"
        + "{\"role_name\":\"Publisher\",\"job_name\":\"RP\"},"
        + "{\"role_name\":\"Analyst\",\"job_name\":\"SA\"},"
        + "{\"role_name\":\"Supervisor\",\"job_name\":\"TS\"},"
        + "{\"role_name\":\"Test1\",\"job_name\":\"TT\"},"
        + "{\"role_name\":\"Manager\",\"job_name\":\"ZG\"},"
        + "{\"role_name\":\"Manager\",\"job_name\":\"ZI\"},"
        + "{\"role_name\":\"Manager\",\"job_name\":\"ZJ\"}";


public static void main(String[] args) {

    //Array1 is set out like an array enclosed in []
    //Array2 is not so...
    JSONArray2 = "[" +JSONArray2 +"]";


    //Modify Array1 to allow JSON to read array by giving the array a name
    //Possibly an unneccesary work around - Self taught...
    JSONArray1 = "{Test1:{JSONArray1:" +JSONArray1 +"}}";
    JSONObject objAll =  new JSONObject(JSONArray1); 
    JSONObject objTest1 = objAll.getJSONObject("Test1");
    JSONArray arrJSONArray1 = objTest1.getJSONArray("JSONArray1");


    //Modify Array1 to allow JSON to read array by giving the array a name
    //Possibly an unneccesary work around - Self taught...
    JSONArray2 = "{Test2:{JSONArray2:" +JSONArray2 +"}}";
    JSONObject objAll2 =  new JSONObject(JSONArray2); 
    JSONObject objTest2 = objAll2.getJSONObject("Test2");
    JSONArray arrJSONArray2 = objTest2.getJSONArray("JSONArray2");


    // Initilise counts for record check results
    int FoundTheSame = 0;
    int FoundDifferent = 0;


    //Read Arrays and compare - code assumes arrays are the same length and order of records
    for (int i = 0; i < arrJSONArray1.length(); ++i) 
    {

        //Read data from Array1 for comparison
        JSONObject objTestJSONArray1 = arrJSONArray1.getJSONObject(i);
        String JSONArray1Job = objTestJSONArray1.getString("job_name");
        String JSONArray1Role = objTestJSONArray1.getString("role_name");

        //Read data from Array2 for comparison
        JSONObject objTestJSONArray2 = arrJSONArray2.getJSONObject(i);
        String JSONArray2Job = objTestJSONArray2.getString("job_name");
        String JSONArray2Role = objTestJSONArray2.getString("role_name");


        //Compare arrays and show results
        if (JSONArray1Job.equals(JSONArray2Job) && JSONArray1Role.equals(JSONArray2Role))
        {  // The same
            FoundTheSame = FoundTheSame + 1;
        } else {
            //Different
            FoundDifferent = FoundDifferent + 1;
            System.out.println("Error" + " " +FoundDifferent +", "
            +"Array Index (starts at 0) = " +i +", Array1 = " +JSONArray1Job +" "
            + JSONArray1Role +", Array2 = " +JSONArray2Job +", " + JSONArray2Role);

        }//end if
    }//end for

    System.out.println("Records found to be the same = " +FoundTheSame + " of " +arrJSONArray1.length());

}//end main
}//end class

如果它们与您提供的数据相同，则会导致以下结果...

Records found to be the same = 10 of 10

或者，如果我更改了某些内容以突出显示错误，则示例响应是...

Error 1, Array Index (starts at 0) = 4, Array1 = SA Analyst, Array2 = SA, Analystt
Error 2, Array Index (starts at 0) = 8, Array1 = AA Manager, Array2 = ZI, Manager
Records found to be the same = 8 of 10

Answer 2

我建议你使用https://github.com/eBay/json-comparison 库 这是测试两者在语义上相同的代码（我只取了数组中的前两行）顺便说一句，使用这个库你也可以忽略特定的路径/过滤器路径/顺序，输出非常友好，检查一下

  String array1 = "[{\"job_name\":\"CE\",\"role_name\":\"Excellence\"},\n" +
            "{\"job_name\":\"PA\",\"role_name\":\"Approver\"}]";

    String array2 = "[{\"role_name\":\"Excellence\",\"job_name\":\"CE\"},\n" +
            "{\"role_name\":\"Approver\",\"job_name\":\"PA\"}]";

    JsonComparisonResult compareResult = JsonCompare.builder().build()
            .compare(array2, array1);

    assertTrue(compareResult.isMatch());