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

异常信息

对list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 stringList = FastJsonUtil.parseArray(sb.toString(),String.class);

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