异常处理:com.alibaba.fastjson.JSONException: syntax error, expect {, actual [, pos 0

##异常详情:com.alibaba.fastjson.JSONException: syntax error, expect {, actual string, pos 0, fastjson-version 1.2.70

原因:返回应该是List<Object>类型的数据,在使用JSON.parseObject()转换时,返回的是实体类型。

//定义返回类型
List<ShareResponseVO> shareResponseVOS = null;

//需要转换的数据,格式:[
        {
            "title": "标题1",
            "newbornName": "XX",
            "gender": "X",
            "creator": "",
            "time": "XXXX",
            "gestation": "XX",
            "weight": "XXXX",
            "height": "XXXX",
            "place": "XXXX",
            "effectiveTime": "2000-11-16",
            "documentId": "R3205854958",
            "contentType": "",
            "PDF": "upload/20210506/08856328f6of453435b2f389b9b796f.pdf"
        },{
            "title": "标题2",
            "newbornName": "XX",
            "gender": "X",
            "creator": "",
            "time": "XXXX",
            "gestation": "XX",
            "weight": "XXXX",
            "height": "XXXX",
            "place": "XXXX",
            "effectiveTime": "2000-11-16",
            "documentId": "R3205854958",
            "contentType": "",
            "PDF": "upload/20210506/05656328f6of453435b2f389b9yttr67.pdf"
        },
    ]
String sJson= “XXXXXXXXXXXX”;

//使用JSON.parseObject转换,返回的是实体类型,与定义的返回类型不一致,所以出现错误。(重点!重点!重点!)
//shareResponseVOS = JSON.parseObject(sJson, ShareResponseVO.class);

上面例子就是出现错误的原因(代码最后一行)。正确的转换如下:

//定义返回类型
List<ShareResponseVO> shareResponseVOS = null;

//需要转换的字符串
String sJson= “XXXXXXXXXXXX”;

//原因就在于使用JSON.psrseObject返回的是实体类型,应该使用JSON.parseArray返回List。(重点!重点!重点!)
shareResponseVOS = JSON.parseArray(sJson, ShareResponseVO.class);

如果需要转换的数据带有转义符,导致转换异常

//定义返回类型
List<ShareResponseVO> shareResponseVOS = null;

//需要转换的数据,格式:[
        {
            \"title\":\ "标题1\",
            \"newbornName\": \"XX\",
            \"gender\": \"X\",
            \"creator\": \"\",
            \"birthTime\": \"XXXX\",
            \"gestation\": \"XX\",
            \"weight\": \"XXXX\",
            \"height\": \"XXXX\",
            \"birthPlace\": \"XXXX\",
            \"effectiveTime\": \"2000-11-16\",
            \"documentId\": \"R3205854958\",
            \"contentType\": \"\",
            \"PDF\": \"upload/20210506/08856328f6of453435b2f389b9b796f.pdf\"
        },{
            \"title\":\ "标题2\",
            \"newbornName\": \"XX\",
            \"gender\": \"X\",
            \"creator\": \"\",
            \"birthTime\": \"XXXX\",
            \"gestation\": \"XX\",
            \"weight\": \"XXXX\",
            \"height\": \"XXXX\",
            \"birthPlace\": \"XXXX\",
            \"effectiveTime\": \"2000-11-16\",
            \"documentId\": \"R3205854958\",
            \"contentType\": \"\",
            \"PDF\": \"upload/20210506/08856328f6of453435b2f389b9b796f.pdf\"
        }
    ]
String sJson= “XXXXXXXXXXXX”;

/**
* 按照以下两行代码处理下,就可以正常转换了(重点!重点!重点!)
*/
Object parse = JSONObject.parse(sJson);
String sJsonOne = parse.toString();

//使用JSON.parseArray返回List。
shareResponseVOS = JSON.parseArray(sJsonOne , ShareResponseVO.class);

一定要注意标记(重点!重点!重点!)的地方。

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转载自blog.csdn.net/weixin_39763930/article/details/116483328