Gson解析JSON

缺乏、安全感 2022-08-05 11:28 169阅读 0赞

以前经常用jsonobject解析JSON，有时候出现特殊字符处理会很麻烦，现在用Gson解析处理很方便，以下是工具类

import java.util.ArrayList;
    import java.util.List;
    import java.util.Map;
    
    import com.gbt.model.Huifas;
    import com.gbt.model.Huifasidcheck;
    import com.google.gson.Gson;
    import com.google.gson.reflect.TypeToken;
    
    public class JsonGsonUtil { 
    
        public static <T> T getPerson(String jsonString, Class<T> cls) { 
            T t = null;
            try {
                Gson gson = new Gson();
                t = gson.fromJson(jsonString, cls);
            } catch (Exception e) {
                // TODO: handle exception
            }
            return t;
        }
    
        public static <T> List<T> getPersons(String jsonString, Class<T> cls) { 
            List<T> list = new ArrayList<T>();
            try {
                Gson gson = new Gson();
                list = gson.fromJson(jsonString, new TypeToken<List<T>>() {
                }.getType());
            } catch (Exception e) {
            }
            return list;
        }
    
        public static List<Map<String, Object>> listKeyMaps(String jsonString) {
            List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
            try {
                Gson gson = new Gson();
                list = gson.fromJson(jsonString,
                        new TypeToken<List<Map<String, Object>>>() {
                        }.getType());
            } catch (Exception e) {
                // TODO: handle exception
            }
            return list;
    
        }
    
        public static <T> Huifasidcheck getHuifasidcheck(String jsonString, Class<Huifasidcheck> cls) { 
            Huifasidcheck t = null;
            try {
                Gson gson = new Gson();
                t = gson.fromJson(jsonString, cls);
            } catch (Exception e) {
                // TODO: handle exception
            }
            return t;
        }
    
    }

1、不管是 list、object 都可以直接调用 JsonGsonUtil中的方法，自动解析  
2、需要下载Gson jar包  
3、`<dependency> <groupId>com.google.code.gson</groupId> <artifactId>gson</artifactId> <version>2.2.2</version> </dependency>`