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: [email protected]
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

 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.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