com.alibaba.fastjson.JSONException: syntax error, pos 2, json : [andgs, jlfgj, uroieu]

Dear 丶 2022-05-20 09:43 144阅读 0赞

# 异常信息 #

对list<String>的字符串进行处理，希望通过fastjson将字符串转换为list。list调用toString方法后变为\[aaaa,bbb,cccc\]，在使用FastJsonUtil.parseArray(list.toString(),String.class);出现以下异常

com.alibaba.fastjson.JSONException: syntax error, pos 2, json : [andgs, jlfgj, uroieu]
    
     at com.alibaba.fastjson.parser.DefaultJSONParser.parse(DefaultJSONParser.java:1436) at com.alibaba.fastjson.parser.DefaultJSONParser.parse(DefaultJSONParser.java:1322) at com.alibaba.fastjson.parser.DefaultJSONParser.parseArray(DefaultJSONParser.java:732) at com.alibaba.fastjson.parser.DefaultJSONParser.parseArray(DefaultJSONParser.java:681) at com.alibaba.fastjson.parser.DefaultJSONParser.parseArray(DefaultJSONParser.java:676) at com.alibaba.fastjson.JSON.parseArray(JSON.java:535) at com.example.demo.util.FastJsonUtil.parseArray(FastJsonUtil.java:20) at com.example.demo.DemoApplicationTests.testListToString(DemoApplicationTests.java:441) 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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75) at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86) at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

# 解决方法 #

必须用双引号表示字符串，如\[\\”aaa\\”,\\”bbb\\”\]这种格式，在使用json前对字符串进行处理，或者不用json，直接处理

StringBuilder sb = new StringBuilder();
    sb.append("[");
    for(int i=  0; i < strs.size(); i++){ 
        sb.append("\"");
        sb.append(strs.get(i));
        sb.append("\"");
        if (i != strs.size() - 1){
            sb.append(",");
        }
    }
    sb.append("]");
    List<String> stringList = FastJsonUtil.parseArray(sb.toString(),String.class);

str = str.substring(1,str.length() - 1);
    String [] strs = str.split(",");
    List<String> list = Arrays.asList(strs);