老规矩，概念的东西不再此处体现，baidu即可自行解决，直入主题，动手第一。

导入所需的jar文件

pom.xml

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.6</version><!--$NO-MVN-MAN-VER$-->
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.9.8</version><!--$NO-MVN-MAN-VER$-->
        </dependency>
        <dependency>
            <groupId>com.github.fge</groupId>
            <artifactId>json-patch</artifactId>
            <version>1.9</version>
        </dependency>
    </dependencies>

 

创建demo文件

JsonPatchDemo.java

package com.szl.demo.szldemo;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.github.fge.jsonpatch.JsonPatch;

public class JsonPatchDemo {

    public static void main(String[] args) {
        String origin = "{\"userName\":\"Captain America\", \"userAccount\":\"qweewq\", \"userPwd\":\"333777\"}";
        String patch = "["
                + "{\"op\":\"replace\", \"path\":\"/userName\", \"value\":\"Ant Man\"},"
                + "{\"op\":\"add\", \"path\":\"/level\", \"value\":\"9\"},"
                + "{\"op\":\"replace\", \"path\":\"/userPwd\", \"value\":\"xxxxxx\"}"
                + "]";
        String afterJson = patchApplication(origin, patch);
        System.out.println(afterJson);
    }

    /**
     * @param origin        原JSON
     * @param patch         patch信息
     * @return
     */
    public static String patchApplication(String origin, String patch) {
        try {
            ObjectMapper objectMapper = new ObjectMapper();
            // 将原json转为JsonNode
            JsonNode originJson = objectMapper.readTree(origin);
            // 将patch json转为 JsonNode
            JsonNode patchJson = objectMapper.readTree(patch);
            // 将patch形式的json转为 JsonPatch
            JsonPatch patcher = JsonPatch.fromJson(patchJson);
            
            // patch应用替换原JSON
            JsonNode afterJson = patcher.apply(originJson);
            return afterJson.toString();
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
    
    
}

 

是不是很简单，就是这么easy，以下是jsonPatch的官网，版本也在不断的更新，可以持续关注。

http://jsonpatch.com/