json解析异常 - net.sf.json.JSONException: java.lang.reflect.InvocationTargetException

注:在项目中, 我使用原生的ajax请求数据的时候, JSONObject没能帮我解析, 当却不给我报错, 我是在junit单元测试中测试的时候, 发现的.发现好多时候, 特别是通过ajax请求, 不给我们报错,很郁闷, 特别是ie, 有些问题, 得借助FireFox的返回结果分析.

当然, FireFox有时也没报错.

异常栈:

net.sf.json.JSONException: java.lang.reflect.InvocationTargetException
at net.sf.json.JSONObject._fromBean(JSONObject.java:953)
at net.sf.json.JSONObject.fromObject(JSONObject.java:192)
at net.sf.json.JSONObject._processValue(JSONObject.java:2774)
at net.sf.json.JSONObject._setInternal(JSONObject.java:2798)
at net.sf.json.JSONObject.setValue(JSONObject.java:1507)
at net.sf.json.JSONObject._fromBean(JSONObject.java:940)
at net.sf.json.JSONObject.fromObject(JSONObject.java:192)
at net.sf.json.JSONObject._processValue(JSONObject.java:2774)
at net.sf.json.JSONObject.processValue(JSONObject.java:2833)
at net.sf.json.JSONObject.element(JSONObject.java:1871)
at net.sf.json.JSONObject.element(JSONObject.java:1849)
at net.sf.json.JSONObject.put(JSONObject.java:2466)
at sys_bd.json.JsonService.getJsonStr(JsonService.java:8)
at com.bd.action.LockAction.queryMapByAttSuccess(LockAction.java:442)
at com.db.action.LockActionTest.testEncapsulateLockAsJson(LockActionTest.java:40)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.commons.beanutils.PropertyUtilsBean.invokeMethod(PropertyUtilsBean.java:1773)
at org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1132)
at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:686)
at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:715)
at org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:290)
at net.sf.json.JSONObject._fromBean(JSONObject.java:928)
... 37 more
Caused by: java.lang.IllegalArgumentException
at java.sql.Date.getHours(Date.java:182)
... 47 more

View Code
该问题描述了使用json封装对象的时候, 对于日期格式,报该错.

有的人说将对象的getter指定包(java.uti.Date)就可以, 但是我测试发现不可以.

我的解决方案是参考: http://segmentfault.com/q/1010000000095526

工具类为:使用config对象

package sys_bd.json;

import java.text.SimpleDateFormat;

import net.sf.json.JSONObject;
import net.sf.json.JsonConfig;
import net.sf.json.processors.JsonValueProcessor;

public class JsonService {
private JsonService() {}

private static final JsonConfig jsonConfig = init();

private static JsonConfig init() {
JsonConfig jsonConfig = new JsonConfig();
jsonConfig.registerJsonValueProcessor(java.util.Date.class,
new JsonValueProcessor() {
private SimpleDateFormat sd = new SimpleDateFormat(
"yyyy-MM-dd");

public Object processObjectValue(String key, Object value,
JsonConfig jsonConfig) {
return value == null ? "" : sd.format(value);
}

public Object processArrayValue(Object value,
JsonConfig jsonConfig) {
return null;
}
});
return jsonConfig;
}

public static String getJsonStr(String key, Object value) {
//使用config对象.
JSONObject jsonObject = JSONObject.fromObject(value, jsonConfig);
return jsonObject.toString();
}
}