framework apache commons
http://commons.apache.org/web service >>> xml to java
object
= diggester+beanutils+logging
Commons Digester 2.0 API
http://commons.apache.org/digester/
http://commons.apache.org/digester/commons-digester-2.0/docs/api/
Digester download
http://archive.apache.org/dist/commons/digester/binaries/
http://archive.apache.org/dist/commons/digester/binaries/commons-digester-2.0-bin.zip
Commons BeanUtils 1.8.2 API
http://commons.apache.org/beanutils/
http://commons.apache.org/beanutils/api/index.html
beanutils download
http://archive.apache.org/dist/commons/beanutils/binaries/
http://labs.xiaonei.com/apache-mirror/commons/beanutils/binaries/commons-beanutils-1.8.2-bin.zip
Commons Logging 1.1.2-SNAPSHOT API
http://commons.apache.org/logging/apidocs/index.html
loggind download
http://archive.apache.org/dist/commons/logging/
http://archive.apache.org/dist/commons/logging/binaries/commons-logging-1.1.1-bin.zip
webservice begin
# pwd
/home/lindows/workspace/test/src/com/javaeye/lindows/digester
# ll
总计 64
-rw-r--r-- 1 lindows users 835 11-25 21:17 Academy.java
-rw-r--r-- 1 lindows users 993 11-25 21:29 academyRules.xml
-rw-r--r-- 1 lindows users 984 11-20 08:18 acdemy.xml
-rw-r--r-- 1 lindows users 330 11-25 15:40 Course.java
drwxr-xr-x 2 lindows users 4096 11-25 21:31 CVS
-rw-r--r-- 1 lindows users 2114 11-25 21:23 DigestXMLJavaAcademy.java
-rw-r--r-- 1 lindows users 755 11-25 18:45 Student.java
-rw-r--r-- 1 lindows users 607 11-25 21:22 Teacher.java
http://developer.ccidnet.com/art/322/20021211/33259_1.html
相关资源
·The Jakarta Commons homepage: http://jakarta.apache.org/commons
·Two open source XML parsers suitable for use with Digester are:
o Xerces
o Crimson
·Open source projects that use Digester:
o Struts
o Tomcat
·Other Jakarta Commons components:
http://jakarta.apache.org/commons/components.html
· Erik Swenson's previous Open Source Profile column, "Reports Made Easy with JasperReports" (JavaWorld, September 2002):
http://www.javaworld.com/javaworld/jw-09-2002/jw-0920-opensourceprofile.html
· Browse the Java and XML section of JavaWorld's Topical Index:
http://www.javaworld.com/channel_content/jw-xml-index.shtml
·Chat about Java development in the JavaWorld Forum:
http://forums.devworld.com/webx?13@@.ee6b802
· Sign up for JavaWorld's free weekly email newsletters:
http://www.javaworld.com/subscribe
· You'll find a wealth of IT-related articles from our sister publications at IDG.net
Java Open Source Software: Jakarta commons Digester
http://www.itags.org/java/583235/
Hi
Anyone like to offer an example that uses the
org.apache.commons.digester to create objects with a non empty
constructor. Nothing too complicated - an object with a String in the
Constructor will suffice.
Apache Digester应用实例 [原创]
http://www.iyunv.com/topic/39330
http://philos.iyunv.com/blog/176724
前段时间项目中需要根据xml文件创建java对象,而apache commons-digester是首选.
一直想把它写下来,可是总有点懒
这次介绍一下digester的常用法,其他更高级的使用方法请参阅digester doc(由于比较忙,下次有时间写一篇关于cglib的常用法,呵呵)
Apache Digester应用实例 [原创]
--------------利用 apache commons-digester 自动根据xml文件创建java 对象
<day day up>
author: binker
email: binker_cao@163.com
date: 2006/12/16
note: 本文可以任意转载,但请保持其完整性并注明来源,谢谢.
一.序
Digester是apache的一个组件 apache
commons-digester.jar,通过它可以很方便的从xml文件生成java对象.你不用再象以前通过jdom或者Xerces去读取一个
document对象.(jdom和Xerces仍然有它们的用武之地及强大之处,在其它应用里你也少不了它们)
我只是用一个例子展示一下如何把xml文件生成一个java object.
首先你必须把jar加入到你的项目classpath.
(一)准备:
1.环境: Eclipse, jdk1.4+
2.需求说明：学院包含学生和老师，学生可以选修课程，老师有不同的资格认证。
3.Java Class的定义，简洁起见，略去import内容。
4.使用Digester生成java对象 必须要定义一个xml文件，此xml文件必须符合digester-rules.dtd的规则。
5.所有的xml文件必须在classpath路径中，这样可以通过Class.getClassLoader().getInputStream()读取xml文件。
(二)提要:
本示例所需的java class 和 xml文件分成四类:
1.基础xml文件: : 你将要解析的xml文件.
2.基础java class: : 生成的对象的类定义
3.digesterRules.xml: : 定义了基础xml文件到基础java class的匹配(映射)关系
4.Digester class: : 根据digesterRules.xml去解析基础xml文件,并生成java 对象
(三)参考资料
1.English ebook: Pro Jakarta Commons by Harshad Oak Apress 2004
二.基础Java Class
1.学院 class Academy.java
[*]
public
class
Academy {
[*]
private
Vector students;
[*]
private
Vector teachers;
[*]
private
String name;
[*]
[*]
public
Academy() {
[*]
students = new
Vector();
[*]
teachers = new
Vector();
[*]
}
[*]
[*]
public
void
addStudent(Student student) {
[*]
students.addElement(student);
[*]
}
[*]
[*]
public
void
addTeacher(Teacher teacher) {
[*]
teachers.addElement(teacher);
[*]
}
[*]
[*]
public
Vector getStudents() {
[*]
return
students;
[*]
}
[*]
[*]
public
void
setStudents(Vector newStudents) {
[*]
students = newStudents;
[*]
}
[*]
public
Vector getTeachers() {
[*]
return
teachers;
[*]
}
[*]
[*]
public
void
setTeachers(Vector newTeachers) {
[*]
teachers = newTeachers;
[*]
}
[*]
[*]
public
String getName() {
[*]
return
name;
[*]
}
[*]
[*]
public
void
setName(String newName) {
[*]
name = newName;
[*]
}
[*]
}
public class Academy {
private Vector students;
private Vector teachers;
private String name;
public Academy() {
students = new Vector();
teachers = new Vector();
}
public void addStudent(Student student) {
students.addElement(student);
}
public void addTeacher(Teacher teacher) {
teachers.addElement(teacher);
}
public Vector getStudents() {
return students;
}
public void setStudents(Vector newStudents) {
students = newStudents;
}
public Vector getTeachers() {
return teachers;
}
public void setTeachers(Vector newTeachers) {
teachers = newTeachers;
}
public String getName() {
return name;
}
public void setName(String newName) {
name = newName;
}
}
============================================================
2.学生 Student.java
[*]
public
class
Student {
[*]
private
Vector courses;
[*]
private
String name;
[*]
private
String division;
[*]
[*]
public
Student() {
[*]
courses = new
Vector();
[*]
}
[*]
[*]
public
void
addCourse(Course course) {
[*]
courses.addElement(course);
[*]
}
[*]
[*]
public
String getName() {
[*]
return
name;
[*]
}
[*]
public
void
setName(String newName) {
[*]
name = newName;
[*]
}
[*]
[*]
public
String getDivision() {
[*]
return
division;
[*]
}
[*]
[*]
public
void
setDivision(String newDivision) {
[*]
division = newDivision;
[*]
}
[*]
[*]
public
void
setCourses(Vector courses) {
[*]
this
.courses = courses;
[*]
}
[*]
[*]
public
Vector getCourses() {
[*]
return
courses;
[*]
}
[*]
}
public class Student {
private Vector courses;
private String name;
private String division;
public Student() {
courses = new Vector();
}
public void addCourse(Course course) {
courses.addElement(course);
}
public String getName() {
return name;
}
public void setName(String newName) {
name = newName;
}
public String getDivision() {
return division;
}
public void setDivision(String newDivision) {
division = newDivision;
}
public void setCourses(Vector courses) {
this.courses = courses;
}
public Vector getCourses() {
return courses;
}
}
============================================================
3.老师 Teacher.java
[*]
public
class
Teacher {
[*]
private
String name;
[*]
private
Vector certifications;
[*]
[*]
public
Teacher() {
[*]
certifications = new
Vector();
[*]
}
[*]
[*]
public
void
addCertification(String certification) {
[*]
certifications.addElement(certification);
[*]
}
[*]
[*]
public
String getName() {
[*]
return
name;
[*]
}
[*]
[*]
public
void
setName(String newName) {
[*]
name = newName;
[*]
}
[*]
[*]
public
void
setCertifications(Vector certifications) {
[*]
this
.certifications = certifications;
[*]
}
[*]
[*]
public
Vector getCertifications() {
[*]
return
certifications;
[*]
}
[*]
}
public class Teacher {
private String name;
private Vector certifications;
public Teacher() {
certifications = new Vector();
}
public void addCertification(String certification) {
certifications.addElement(certification);
}
public String getName() {
return name;
}
public void setName(String newName) {
name = newName;
}
public void setCertifications(Vector certifications) {
this.certifications = certifications;
}
public Vector getCertifications() {
return certifications;
}
}
============================================================
4.课程 Course.java
[*]
public
class
Course {
[*]
private
String id;
[*]
private
String name;
[*]
[*]
public
Course() {
[*]
}
[*]
[*]
public
String getId() {
[*]
return
id;
[*]
}
[*]
[*]
public
void
setId(String newId) {
[*]
id = newId;
[*]
}
[*]
public
String getName() {
[*]
return
name;
[*]
}
[*]
[*]
public
void
setName(String newName) {
[*]
name = newName;
[*]
}
[*]
}
public class Course {
private String id;
private String name;
public Course() {
}
public String getId() {
return id;
}
public void setId(String newId) {
id = newId;
}
public String getName() {
return name;
}
public void setName(String newName) {
name = newName;
}
}
三.基础XML文件
============================================================
学院 academy.xml,包含了学生(包含了课程),老师
[*]
<?xml version=
"1.0"
?>
[*]
<academy name="JAcademy"
>
[*]
<student name="JavaBoy"
division=
"A"
>
[*]
<course>
[*]
<id>C1</id>
[*]
<name>JSP</name>
[*]
</course>
[*]
<course>
[*]
<id>C2</id>
[*]
<name>Servlets</name>
[*]
</course>
[*]
</student>
[*]
<student name="JavaGirl"
division=
"B"
>
[*]
<course>
[*]
<id>C3</id>
[*]
<name>EJB</name>
[*]
</course>
[*]
</student>
[*]
[*]
<teacher name="JavaGuru"
>
[*]
<certification>SCJP</certification>
[*]
<certification>SCWCD</certification>
[*]
</teacher>
[*]
<teacher name="JavaMaster"
>
[*]
<certification>OCP</certification>
[*]
<certification>SCJP</certification>
[*]
<certification>SCEA</certification>
[*]
</teacher>
[*]
</academy>
<?xml version="1.0"?>
<academy name="JAcademy" >
<student name="JavaBoy" division="A">
<course>
<id>C1</id>
<name>JSP</name>
</course>
<course>
<id>C2</id>
<name>Servlets</name>
</course>
</student>
<student name="JavaGirl" division="B">
<course>
<id>C3</id>
<name>EJB</name>
</course>
</student>
<teacher name="JavaGuru">
<certification>SCJP</certification>
<certification>SCWCD</certification>
</teacher>
<teacher name="JavaMaster">
<certification>OCP</certification>
<certification>SCJP</certification>
<certification>SCEA</certification>
</teacher>
</academy>
============================================================
四.Digester Class
DigestXMLJavaAcademy.java 和academyRules.xml
其中academyRules.xml用来定义xml文件和java对象的匹配(映射)关系,格式要符合digester-rules.dtd格式约束
DigestXMLJavaAcademy.java 根据academyRules.xml解析academy.xml文件并生成 Academy对象.
============================================================
[*]
1
. academyRules.xml
[*]
<?xml version="1.0"
?>
[*]
<digester-rules>
[*]
<pattern value="academy"
>
[*]
<object-create-rule classname="com.commonsbook.chap7.academy.Academy"
/>
[*]
<set-properties-rule />
[*]
<pattern value="student"
>
[*]
<object-create-rule classname="com.commonsbook.chap7.academy.Student"
/>
[*]
<set-properties-rule />
[*]
[*]
<pattern value="course"
>
[*]
<object-create-rule classname="com.commonsbook.chap7.academy.Course"
/>
[*]
<bean-property-setter-rule pattern="id"
/>
[*]
<bean-property-setter-rule pattern="name"
/>
[*]
<set-next-rule methodname="addCourse"
/>
[*]
</pattern>
[*]
<set-next-rule methodname="addStudent"
/>
[*]
</pattern>
[*]
[*]
<pattern value="teacher"
>
[*]
<object-create-rule classname="com.commonsbook.chap7.academy.Teacher"
/>
[*]
<set-properties-rule />
[*]
<call-method-rule pattern="certification"
methodname=
"addCertification"
[*]
paramcount="1"
/>
[*]
<call-param-rule pattern="certification"
paramnumber=
"0"
/>
[*]
<set-next-rule methodname="addTeacher"
/>
[*]
</pattern>
[*]
</pattern>
[*]
</digester-rules>
1. academyRules.xml
<?xml version="1.0"?>
<digester-rules>
<pattern value="academy">
<object-create-rule classname="com.commonsbook.chap7.academy.Academy" />
<set-properties-rule />
<pattern value="student">
<object-create-rule classname="com.commonsbook.chap7.academy.Student" />
<set-properties-rule />
<pattern value="course">
<object-create-rule classname="com.commonsbook.chap7.academy.Course" />
<bean-property-setter-rule pattern="id"/>
<bean-property-setter-rule pattern="name"/>
<set-next-rule methodname="addCourse" />
</pattern>
<set-next-rule methodname="addStudent" />
</pattern>
<pattern value="teacher">
<object-create-rule classname="com.commonsbook.chap7.academy.Teacher" />
<set-properties-rule />
<call-method-rule pattern="certification" methodname="addCertification"
paramcount="1" />
<call-param-rule pattern="certification" paramnumber="0"/>
<set-next-rule methodname="addTeacher" />
</pattern>
</pattern>
</digester-rules>
============================================================
2. DigestXMLJavaAcademy.java
[*]
public
class
DigestXMLJavaAcademy {
[*]
public
void
digest(){
[*]
try
{
[*]
//Create Digester using rules defined in academyRules.xml
[*]
Digester digester = DigesterLoader.createDigester(
[*]
this
.getClass().getClassLoader().getResource(
"academyRules.xml"
));
[*]
[*]
//Parse academy.xml using the Digester to get an instance of Academy
[*]
Academy a = (Academy)digester.parse(
[*]
this
.getClass().getClassLoader().getResourceAsStream(
"academy.xml"
));
[*]
[*]
Vector vStud=a.getStudents();
[*]
Vector vTeach=a.getTeachers();
[*]
[*]
for
(
int
i =
0
; i < vStud.size(); i++) {
[*]
System.out.println("Student>> "
+PropertyUtils.describe(vStud.get(i)));
[*]
}
[*]
[*]
for
(
int
i =
0
; i < vTeach.size(); i++) {
[*]
System.out.println("Teacher>> "
+ PropertyUtils.describe(vTeach.get(i)));
[*]
}
[*]
} catch
(Exception e) {
[*]
e.printStackTrace();
[*]
}
[*]
}
[*]
[*]
public
static
void
main(String[] args) {
[*]
DigestXMLJavaAcademy xmlDigest= new
DigestXMLJavaAcademy();
[*]
xmlDigest.digest();
[*]
}
[*]
}
public class DigestXMLJavaAcademy {
public void digest(){
try {
//Create Digester using rules defined in academyRules.xml
Digester digester = DigesterLoader.createDigester(
this.getClass().getClassLoader().getResource("academyRules.xml"));
//Parse academy.xml using the Digester to get an instance of Academy
Academy a = (Academy)digester.parse(
this.getClass().getClassLoader().getResourceAsStream("academy.xml"));
Vector vStud=a.getStudents();
Vector vTeach=a.getTeachers();
for (int i = 0; i < vStud.size(); i++) {
System.out.println("Student>> "+PropertyUtils.describe(vStud.get(i)));
}
for (int i = 0; i < vTeach.size(); i++) {
System.out.println("Teacher>> "+ PropertyUtils.describe(vTeach.get(i)));
}
} catch(Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
DigestXMLJavaAcademy xmlDigest= new DigestXMLJavaAcademy();
xmlDigest.digest();
}
}
五.运行结果
PropertyUtils.describ(Object)用法
http://philos.iyunv.com/blog/176724
使用org.apache.commons.beanutils.PropertyUtils.describ(Object)生成Map实例，其中包含了源bean中所有可读的属性。下面的代码片段演示了这个特性：
[*]
Person author =
new
Person();
[*]
author.setName("Timothy M. O'Brien"
);
[*]
[*]
Book book = new
Book();
[*]
book.setName("Jakarta Commons Cookbook"
);
[*]
book.setAuthor(author);
[*]
[*]
// 取得book中的所有可读属性,返回到map中
[*]
Map bookMap = PropertyUtils.describe(book);
[*]
// Book类中包含一个Author类型的属性
[*]
// 取bookMap中的author bean,并将其所有可读属性返回到authorMap中
[*]
Map authorMap = PropertyUtils.describe(bookMap.get("author"
));
[*]
[*]
// 输出
[*]
// Book Name: Jakarta Commons Cookbook
[*]
// Author Name: Timothy M. O'Brien
[*]
System.out.println("Book Name: "
+ bookMap.get(
"name"
));
[*]
System.out.println("Author Name: "
+ authorMap.get(
"name"
));
Person author = new Person();
author.setName("Timothy M. O'Brien");
Book book = new Book();
book.setName("Jakarta Commons Cookbook");
book.setAuthor(author);
// 取得book中的所有可读属性,返回到map中
Map bookMap = PropertyUtils.describe(book);
// Book类中包含一个Author类型的属性
// 取bookMap中的author bean,并将其所有可读属性返回到authorMap中
Map authorMap = PropertyUtils.describe(bookMap.get("author"));
// 输出
// Book Name: Jakarta Commons Cookbook
// Author Name: Timothy M. O'Brien
System.out.println("Book Name: " + bookMap.get("name"));
System.out.println("Author Name: " + authorMap.get("name"));
在上面的例子中假如Book类中还有个Integer型的page属性，代表书籍页数，在没设置的情况下，将返回null，如果page属性为int型，则将返回0。
http://commons.apache.org/fileupload/
FileUpload 1.2.1
- 18 January 2008
[*]Download the binary and source distributions from a mirror site
here
DWR + FileUpload 多文件上传实例
http://www.iyunv.com/topic/247420
功能： 文件上传
特点： 动态显示进度， 百分比， 文件名， 文件长度， 上传速度... 剩下的自己看吧
主要技术： DWR， Apache commons FileUpload
原理： FileUpload实现上传功能， UploadListener 监听上传进度， DWR push (Reverse Ajax) 进度信息并更新页面， 实现无刷新多文件上传
运行环境： Tomcat 6， WAS 6 测试通过
WAR
包下载
见附件
顺便截个图：
http://dl.iyunv.com/topics/download/53b9ba95-5a12-3d89-a545-8d7f90fddb75
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