現在的接口測試中，大多數請求響應的報文格式都為json格式支竹。那么在Jmeter接口測試中如何對json格式的數據進行處理呢眷细，本文整理了三種常見的方式。

json報文

{
    "accidentNo": "Acc_942900",
    "companyId": "${companyID_83}",
    "companyCode": "${companyCode_83}",
    "account": "${account_83}",
    "claimUniqueId": "claim_895073",
    "interfaceCode": "ClaimPush",
    "message": "83 dummy sampler success",
    "resultCode": "000",
    "auditReport": {
        "auditRuleTriggers": [{
            "actualValue": "    報案次數：\n            2\n",
            "auditScore": 20,
            "itemInfoList": [],
            "itemName": "報案人姓名：王俊",
            "redLineType": "00",
            "ruleName": "報案人在多張保單中出現",
            "ruleNo": "0102010024",
            "ruleType": "02",
            "ruleValue": "    報案次數：\n        1-9999\n"
        },
        {
            "actualValue": "\t\t\t\t定型的具體車型配置：523LI 2011款 2.5L 兩驅 手自一體 豪華版\n",
            "auditScore": 30,
            "itemInfoList": [],
            "itemName": "",
            "redLineType": "00",
            "ruleName": "車輛定型的車型配置與承保的車型配置不一致（車型配置名稱）",
            "ruleNo": "0102020008",
            "ruleType": "02",
            "ruleValue": "        承保的車型配置：嘉年華 兩廂 2009款 1.3L 手動 經典版\n"
        },
        {
            "actualValue": "",
            "auditScore": 25,
            "itemInfoList": [],
            "itemName": "修理廠名稱：安徽SC修理廠",
            "redLineType": "00",
            "ruleName": "重點關注修理廠",
            "ruleNo": "0102030001",
            "ruleType": "02",
            "ruleValue": ""
        },
        {
            "actualValue": "            5\n",
            "auditScore": 10,
            "itemInfoList": [],
            "itemName": "",
            "redLineType": "00",
            "ruleName": "碰撞點選擇過多",
            "ruleNo": "0102010042",
            "ruleType": "02",
            "ruleValue": "        1\n"
        },
        {
            "actualValue": "",
            "auditScore": 10,
            "itemInfoList": [],
            "itemName": "",
            "redLineType": "00",
            "ruleName": "非第一現場查勘",
            "ruleNo": "0102010014",
            "ruleType": "02",
            "ruleValue": ""
        },
        {
            "actualValue": "",
            "auditScore": 20,
            "itemInfoList": [{
                "claimItemUniqueId": null,
                "itemName": "右前翼子板后內襯板",
                "itemType": "02",
                "materialFeeAfterDiscount": null,
                "paintFeeAfterDiscount": 0.5,
                "partFeeAfterDiscount": null,
                "propAmount": null,
                "propSecondType": null,
                "propType": null,
                "quantity": null,
                "removeLaborFeeDiscount": 12.5,
                "repairLaborFeeDiscount": 1,
                "standardPartId": "162",
                "unitPrice": null
            }],
            "itemName": "右前翼子板后內襯板\n",
            "redLineType": "00",
            "ruleName": "不建議外修的配件進行了外修操作",
            "ruleNo": "0103010018",
            "ruleType": "03",
            "ruleValue": ""
        }]
    }
}

（1）使用正則表達式提取
在對應的請求下添加正則表達式提取器（后置處理器-->正則表達式提取器）

image.png

可以通過debug sampler查看

image.png

（2）使用 JMeter 的后置處理器JSON Extractor獲取json數據中特定位置的數據
在對應的請求下添加JSON Extractor（后置處理器-->JSON Extractor）

image.png

可以通過察看結果樹格粪，JSON Path Tester驗證結果是否正確

image.png

（3）使用JMeter的后置處理器BeanShell Post Processor來處理Json數據
需要將fastjson.jar包拷貝到 jmeter lib 文件夾下后重啟 jmeter
在在對應的請求下添加后置處理器-->BeanShell PostProcessor

image.png

代碼：

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

String json=prev.getResponseDataAsString();
JSONObject jso = JSON.parseObject(json);
JSONObject data = jso.getJSONObject("auditReport");
JSONArray array = data.getJSONArray("auditRuleTriggers");
//vars.put("ruleName",array.getJSONObject(1).getString("ruleName"));
log.info("-----------------------------------------------------------------------------"+data);

int length=0;
for(Object o : array){
    String ruleName = o.getString("ruleName");
    log.info(ruleName);
    length++;
}
vars.put("length", Integer.toString(length));
log.info("-----------------------------------------------------------------------------"+length);