framework apache commons

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

[root@localhost digester]# pwd
/home/lindows/workspace/test/src/com/javaeye/lindows/digester
[root@localhost 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.iteye.com/topic/39330

http://philos.iteye.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: [academy.xml]: 你将要解析的xml文件.
2.基础java class: [Academy.java, Teacher.java, Student.java, Cousre.java]: 生成的对象的类定义
3.digesterRules.xml: [academyRules.xml]: 定义了基础xml文件到基础java class的匹配(映射)关系
4.Digester class: [DigestXMLJavaAcademy.java]: 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
1. public class Academy {
2. private Vector students;
3. private Vector teachers;
4. private String name;
6. public Academy() {
7. students = new Vector();
8. teachers = new Vector();
9. }
11. public void addStudent(Student student) {
12. students.addElement(student);
13. }
15. public void addTeacher(Teacher teacher) {
16. teachers.addElement(teacher);
17. }
19. public Vector getStudents() {
20. return students;
21. }
23. public void setStudents(Vector newStudents) {
24. students = newStudents;
25. }
26. public Vector getTeachers() {
27. return teachers;
28. }
30. public void setTeachers(Vector newTeachers) {
31. teachers = newTeachers;
32. }
34. public String getName() {
35. return name;
36. }
38. public void setName(String newName) {
39. name = newName;
40. }
41. }
```
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
1. public class Student {
2. private Vector courses;
3. private String name;
4. private String division;
6. public Student() {
7. courses = new Vector();
8. }
10. public void addCourse(Course course) {
11. courses.addElement(course);
12. }
14. public String getName() {
15. return name;
16. }
17. public void setName(String newName) {
18. name = newName;
19. }
21. public String getDivision() {
22. return division;
23. }
25. public void setDivision(String newDivision) {
26. division = newDivision;
27. }
29. public void setCourses(Vector courses) {
30. this .courses = courses;
31. }
33. public Vector getCourses() {
34. return courses;
35. }
36. }
```
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
1. public class Teacher {
2. private String name;
3. private Vector certifications;
5. public Teacher() {
6. certifications = new Vector();
7. }
9. public void addCertification(String certification) {
10. certifications.addElement(certification);
11. }
13. public String getName() {
14. return name;
15. }
17. public void setName(String newName) {
18. name = newName;
19. }
21. public void setCertifications(Vector certifications) {
22. this .certifications = certifications;
23. }
25. public Vector getCertifications() {
26. return certifications;
27. }
28. }
```
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
1. public class Course {
2. private String id;
3. private String name;
5. public Course() {
6. }
8. public String getId() {
9. return id;
10. }
12. public void setId(String newId) {
13. id = newId;
14. }
15. public String getName() {
16. return name;
17. }
19. public void setName(String newName) {
20. name = newName;
21. }
22. }
```
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
1. <?xml version= "1.0" ?>
2. <academy name="JAcademy" >
3. <student name="JavaBoy" division= "A" >
4. <course>
5. <id>C1</id>
6. <name>JSP</name>
7. </course>
8. <course>
9. <id>C2</id>
10. <name>Servlets</name>
11. </course>
12. </student>
13. <student name="JavaGirl" division= "B" >
14. <course>
15. <id>C3</id>
16. <name>EJB</name>
17. </course>
18. </student>
20. <teacher name="JavaGuru" >
21. <certification>SCJP</certification>
22. <certification>SCWCD</certification>
23. </teacher>
24. <teacher name="JavaMaster" >
25. <certification>OCP</certification>
26. <certification>SCJP</certification>
27. <certification>SCEA</certification>
28. </teacher>
29. </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. 1 . academyRules.xml
2. <?xml version="1.0" ?>
3. <digester-rules>
4. <pattern value="academy" >
5. <object-create-rule classname="com.commonsbook.chap7.academy.Academy" />
6. <set-properties-rule />
7. <pattern value="student" >
8. <object-create-rule classname="com.commonsbook.chap7.academy.Student" />
9. <set-properties-rule />
11. <pattern value="course" >
12. <object-create-rule classname="com.commonsbook.chap7.academy.Course" />
13. <bean-property-setter-rule pattern="id" />
14. <bean-property-setter-rule pattern="name" />
15. <set-next-rule methodname="addCourse" />
16. </pattern>
17. <set-next-rule methodname="addStudent" />
18. </pattern>
20. <pattern value="teacher" >
21. <object-create-rule classname="com.commonsbook.chap7.academy.Teacher" />
22. <set-properties-rule />
23. <call-method-rule pattern="certification" methodname= "addCertification"
24. paramcount="1" />
25. <call-param-rule pattern="certification" paramnumber= "0" />
26. <set-next-rule methodname="addTeacher" />
27. </pattern>
28. </pattern>
29. </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
1. public class DigestXMLJavaAcademy {
2. public void digest(){
3. try {
4. //Create Digester using rules defined in academyRules.xml
5. Digester digester = DigesterLoader.createDigester(
6. this .getClass().getClassLoader().getResource( "academyRules.xml" ));
8. //Parse academy.xml using the Digester to get an instance of Academy
9. Academy a = (Academy)digester.parse(
10. this .getClass().getClassLoader().getResourceAsStream( "academy.xml" ));
12. Vector vStud=a.getStudents();
13. Vector vTeach=a.getTeachers();
15. for ( int i = 0 ; i < vStud.size(); i++) {
16. System.out.println("Student>> " +PropertyUtils.describe(vStud.get(i)));
17. }
19. for ( int i = 0 ; i < vTeach.size(); i++) {
20. System.out.println("Teacher>> " + PropertyUtils.describe(vTeach.get(i)));
21. }
22. } catch (Exception e) {
23. e.printStackTrace();
24. }
25. }
27. public static void main(String[] args) {
28. DigestXMLJavaAcademy xmlDigest= new DigestXMLJavaAcademy();
29. xmlDigest.digest();
30. }
31. }
```
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.iteye.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.iteye.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.iteye.com/topics/download/53b9ba95-5a12-3d89-a545-8d7f90fddb75

end
相关阅读:
设计模式之中介者模式
 解释器模式（行为模式）
进程池Pool
Process子类
 multiprocessing
random
re
time和datetime
logging 日志
 hashlib
原文地址：https://www.cnblogs.com/lindows/p/14390402.html

framework apache commons

Apache Digester应用实例 [原创]