日期:2014-05-16 浏览次数:20345 次
XStream是thoughtworks开发的开源产品,采用的是xpp来进行xml和对象之间的转换。它不需要schema或其他的mapping文件就可以进行java对象和xml文件之间的转换,API调用起来非常方便,并且扩展功能强大。 ?
JSON是目前比较流行的轻量级的对象数据转换方式,常常用在ajax和web service领域。目前大部分语言都有JSON的实现。Java领域有json lib,还有xstream json(jettison)。?
主要是对3者 (xstream, json lib, xstream json) 转换的数据长度,还有转换的效率做个比较。?
转换的java类为:?
package com.ldd600.ws;
public class Employee {
private String name;
private int age;
private Address address;
private double salary;
private boolean isActive;
private char sexy;
public String getName() {
return name;
}
public void setName(String naem) {
this.name = naem;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
public double getSalary() {
return salary;
}
public void setSalary(double salary) {
this.salary = salary;
}
public boolean isActive() {
return isActive;
}
public void setActive(boolean isActive) {
this.isActive = isActive;
}
public char getSexy() {
return sexy;
}
public void setSexy(char sexy) {
this.sexy = sexy;
}
}
?
package com.ldd600.ws; public class Address { private String street; private String country; private String city; private String doorNum; // private Employee employee; private String empName; public String getStreet() { return street; } public void setStreet(String street) { this.street = street; } public String getCountry() { return country; } public void setCountry(String country) { this.country = country; } public String getCity() { return city; } public void setCity(String city) { this.city = city; } public String getDoorNum() { return doorNum; } public void setDoorNum(String doorNum) { this.doorNum = doorNum; } public String getEmpName() { return empName; } public void setEmpName(String empName) { this.empName = empName; } // public Employee getEmployee() { // return employee; // } // // public void setEmployee(Employee employee) { // this.employee = employee; // } }
?
数据格式和长度比较:?
方法 长度 格式?
Xstream 328
<com.ldd600.ws.Employee>
<name>gavin</name>
<age>0</age>
<address>
<street>zhaojiabang</street>
<country>china</country>
<city>shanghai</city>
<doorNum>789</doorNum>
<empName>gavin</empName>
</address>
<salary>300000.0</salary>
<isActive>true</isActive>
<sexy>m</sexy>
</com.ldd600.ws.Employee>
?
Json lib 170 "789","empName":"gavin","street":"zhaojiabang"},"age":0,"name":"gavin","salary":300000,"sexy":"m"}?
XStream json 183 {"employee":{"name":"gavin","age":0,"address":{"street":"zhaojiabang","country":"china","city":"shanghai","doorNum":789,"empName":"gavin"},"salary":300000,"isActive":true,"sexy":"m"}}
时间(转换次数1000000):
方式 | ?时间(ms)? |
Json lib? | 185638? |
XStream xml? | 247863 |
XStream json | 395624 |
?
?
Xstream xml方式比json lib慢:62s?
Xstream json