JSON转换出现错误:net.sf.json.JSONException: Unterminated string at character 38 of

本文介绍了一个使用net.sf.json库解析JSON字符串时遇到的错误:未终止的字符串,并提供了错误堆栈跟踪信息及修正后的JSON数据示例。

一、问题描述


使用net.sf.json把json数据转对象出现错误如下:

net.sf.json.JSONException: Unterminated string at character 38 of {
    "name": "sef",
    "sex": "sex,
    "birthday": "sfes",
    "cardid":"sefs",
    "medicalid":"sefs",
    "mainn":"dse",
    "jws":"sgegse",
    "zhand":"1234",
    "dts":[{
            "drunam":"神经妥乐平片",
            "numnit":"1",
            "pian":"每日一次",
            "kfwyname":"口服"
        },{
            "drunam":"神经妥乐平片",
            "numnit":"1",
            "pian":"每日一次",
            "kfwyname":"口服"
        }]
}
	at net.sf.json.util.JSONTokener.syntaxError(JSONTokener.java:499)
	at net.sf.json.util.JSONTokener.nextString(JSONTokener.java:237)
	at net.sf.json.util.JSONTokener.nextValue(JSONTokener.java:345)
	at net.sf.json.JSONObject._fromJSONTokener(JSONObject.java:1008)
	at net.sf.json.JSONObject._fromString(JSONObject.java:1201)
	at net.sf.json.JSONObject.fromObject(JSONObject.java:165)
	at net.sf.json.JSONObject.fromObject(JSONObject.java:134)
	at com.gz.medicine.yun.doctor.controller.DTCaseHistoryController.adds(DTCaseHistoryController.java:137)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:832)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:743)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:961)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:895)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:869)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
	at com.gz.medicine.common.filter.CORSFilter.doFilter(CORSFilter.java:26)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1132)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1533)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1489)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)


二、解决方法


传入的JSON数据为:


model={
    "name": "sef",
    "sex": "sex",
    "birthday": "sfes,
    "cardid":"sefs",
    "medicalid":"sefs",
    "mainn":"dse",
    "jws":"sgegse",
    "dts": [{
        "drunam": "药品名0",
        "unit": "规格0",
        "numnit": "数量0",
		"pian":"剂量0",
		"pc":"频次0",
		"kfwyname":"途径0"
    },{
        "drunam": "药品名1",
        "unit": "规格1",
        "numnit": "数量1",
		"pian":"剂量1",
		"pc":"频次1",
		"kfwyname":"途径1"
    }]
}

检查了好几篇,发现没问题啊,最好才发现,这里少写了个["]:


"birthday": "sfes


`cn.hutool.json.JSONException: Unterminated string at 180` 错误通常表示 JSON 字符串存在格式问题,具体为在第 180 个字符处字符串未正确结束。以下是一些可能的解决方案: #### 检查字符串中的特殊字符 JSON 字符串中不能包含未转义的特殊字符,如换行符、引号等。可以使用正则表达式替换这些特殊字符。例如,若存在换行符问题,可参考如下代码将换行符替换为空格: ```java import java.util.regex.Pattern; public class JsonStringCleaner { public static String cleanJsonString(String str) { return str.replaceAll("[\n\r]", " "); } public static void main(String[] args) { String dirtyJson = "{\"key\": \"value\nwith newline\"}"; String cleanJson = cleanJsonString(dirtyJson); System.out.println(cleanJson); } } ``` #### 检查 JSON 生成逻辑 若 JSON 是动态生成的,需检查生成逻辑是否正确。确保所有字符串值都正确地用引号括起来,且特殊字符已正确转义。例如,使用 Hutool 的 `JSONUtil` 生成 JSON 时: ```java import cn.hutool.json.JSONObject; import cn.hutool.json.JSONUtil; public class JsonGenerationExample { public static void main(String[] args) { JSONObject json = new JSONObject(); json.put("key", "value"); String jsonStr = JSONUtil.toJsonStr(json); System.out.println(jsonStr); } } ``` #### 调试输出中间结果 在处理 JSON 字符串的过程中,可以输出中间结果,检查每一步的字符串是否符合 JSON 格式。例如: ```java import cn.hutool.json.JSONObject; public class JsonDebugExample { public static void main(String[] args) { String jsonStr = "{\"key\": \"value\"}"; System.out.println("原始 JSON 字符串: " + jsonStr); try { JSONObject json = new JSONObject(jsonStr); System.out.println("解析后的 JSON 对象: " + json); } catch (Exception e) { e.printStackTrace(); } } } ```
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