java - 如何在restful中将map转换为json

Question

这个问题已经有答案了:

How to return a JSON object from a HashMap with Moxy and Jersey (1 个回答)

已关闭 7 年前。

在我的项目中，我动态生成 json 并将其放入 Map<String,Student>() 中注意: key 是动态的所以我的回复打印如下:

"entry": [
        {
          "key": "student1",
          "value": {
            "name":selva
          }
        },
        {
          "key": "student2",
          "value": {
           "name":"kumar"
          }
        }
       ]

但我预期的回应是:

[
"student1" : {
"name":"kumar"
},
"student2" : {
"name":"selva"
}
]

**My keys are dynamic here...**

如何在 Jersey 上达到预期的效果。pom.xml

<!-- Json dependency -->
        <dependency>
            <groupId>org.json</groupId>
            <artifactId>json</artifactId>
        </dependency>
<dependency>
            <groupId>org.glassfish.jersey.media</groupId>
            <artifactId>jersey-media-moxy</artifactId>
        </dependency>

任何帮助将不胜感激!!!!

Answer 1

/**
     * JSONObjects can be built from a Map<String, Object>. 
     * In this test all of the map entries are valid JSON types.
     */
    @Test
    public void jsonObjectByMap() {
        Map<String, Object> map = new HashMap<String, Object>();
        map.put("trueKey", new Boolean(true));
        map.put("falseKey", new Boolean(false));
        map.put("stringKey", "hello world!");
        map.put("escapeStringKey", "h\be\tllo w\u1234orld!");
        map.put("intKey", new Long(42));
        map.put("doubleKey", new Double(-23.45e67));
        JSONObject jsonObject = new JSONObject(map);

        // validate JSON
        Object doc = Configuration.defaultConfiguration().jsonProvider().parse(jsonObject.toString());
        assertTrue("expected 6 top level items", ((Map<?,?>)(JsonPath.read(doc, "$"))).size() == 6);
        assertTrue("expected \"trueKey\":true", Boolean.TRUE.equals(jsonObject.query("/trueKey")));
        assertTrue("expected \"falseKey\":false", Boolean.FALSE.equals(jsonObject.query("/falseKey")));
        assertTrue("expected \"stringKey\":\"hello world!\"", "hello world!".equals(jsonObject.query("/stringKey")));
        assertTrue("expected \"escapeStringKey\":\"h\be\tllo w\u1234orld!\"", "h\be\tllo w\u1234orld!".equals(jsonObject.query("/escapeStringKey")));
        assertTrue("expected \"doubleKey\":-23.45e67", Double.valueOf("-23.45e67").equals(jsonObject.query("/doubleKey")));
}