Java easyreport Import Excel, TXT data association Collection place Object (iii)

In the next section, get the student associated teacher collection with only one, how to place multiple.

Custom Studentmatcher Implementation Matchabled method

Package matcher;

Import java.util.List;

Import Java.util.Map;

Import model. Student;

Import com.easyReport.read.MatchAbled;

public class Studentmatcher implements matchabled<student>{

@Override

public boolean Matchrowbean (Student Student, list<student> students) {

if (!students.contains (student)) {

return true;

}

Student stu = Students.get (Students.indexof (Student));

Stu.getteachers (). AddAll (Student.getteachers ());

return false;

}

@Override

public boolean Matchrowmap (map<string, object> Studentmap,

List<map<string, object>> studentmaps) {

return true;

}

}

Student class generator Hashcode and Equals method

@Override

public int hashcode () {

final int prime = 31;

int result = 1;

result = Prime * result + age;

result = Prime * result + ((name = = null)? 0:name.hashcode ());

return result;

}

@Override

public boolean equals (Object obj) {

if (this = = obj)

return true;

if (obj = = null)

return false;

if (GetClass ()! = Obj.getclass ())

return false;

Student other = (Student) obj;

if (age! = other.age)

return false;

if (name = = null) {

if (other.name! = null)

return false;

} else if (!name.equals (other.name))

return false;

return true;

}

Import data

Name	Age	Subjects	Scores	Name of teacher	Teacher Sex
Bachelor	12	language	Zhang Sanfeng
Bachelor	12	language	Wang Chongyang
Bachelor	12	language
Lee Lao six	15	language
Li Lao Six	15	Chinese	76	Zhang Mowgli	Man

Basictest class

Implementation method

Matcher Matching Device

Protected matchabled<t> Refmatcher () {

return null;

}

Abstractexceltest class Constructs reader modification

Protected Convertreader Buildreader () {

return new Excelreader (New Readercontext (Bulidreadtemp ()), Refmatcher ());

}

Excel Import Demo testexcelmatchable

package example;

Import Java.io.File;

Import Java.io.FileInputStream;

Import java.util.List;

Import Java.util.Map;

Import Matcher. Studentmatcher;

Import model. Student;

Import model. Teacher;

Import Test. Abstractexceltest;

Import com.easyReport.read.MatchAbled;

Import com.easyReport.read.temp.PropertyTemp;

Import com.easyReport.read.temp.ReadTemp;

Import Formater. Sexformater;

public class Testexcelmatchable extends Abstractexceltest<student> {

@Override

public void Test () {

FileInputStream FileInputStream;

try {

FileInputStream = new FileInputStream (New File ("Testfile/test3.xls"));

Testreadbean (FileInputStream);

Testreadmap (FileInputStream);

Fileinputstream.close ();

} catch (Exception e) {

E.printstacktrace ();

}

}

Overriding methods to achieve student matching

@Override

Protected matchabled<student> Refmatcher () {

return new Studentmatcher ();

}

@Override

Protected Readtemp bulidreadtemp () {

Readtemp readtemp = new Readtemp (1);

Readtemp.addpropertytemp (New Propertytemp ("name", "name"));

Readtemp.addpropertytemp (New Propertytemp ("Age", "ages");

Readtemp.addpropertytemp (New Propertytemp ("Account", "Course.name"));

Readtemp.addpropertytemp (New Propertytemp ("Score", "Course.score"));

Readtemp.addpropertytemp (New Propertytemp ("Teacher's name", "Teachers.name"));

Readtemp.addpropertytemp (New Propertytemp ("Teacher Gender", "Teachers.sex", New Sexformater ()));

return readtemp;

}

Iterate and output teacher information

@Override

protected void Writebeanlist (list<student> modellists) {

System.out.println ("--------------bean---------------");

for (Student s:modellists) {

System.out.println (S.getname () + "|"

+ s.getage () +s.getcourse (). GetName () + "|" +s.getcourse (). Getscore ());

System.out.println ("---------Teacher-------------------");

For (Teacher t:s.getteachers ()) {

System.out.println (t);

}

}

}

@Override

protected void Writemaplist (list<map<string, object>> maplists) {

SYSTEM.OUT.PRINTLN ("--------------map---------------");

For (map<string, object> m:maplists) {

System.out.println (M.get ("name") + "|" + m.get ("age") + "|" + M.get ("course.name") + "|" + M.get ("Course.score") +

"|" +m.get ("teachers.name") + "|" +m.get ("Teachers.sex"));

}

}

}

Operation Result:

--------------Bean---------------

Bachelor |12 Chinese |80.0|

---------Teacher-------------------

Zhang Sanfeng | M

Wang Chongyang | M

Hua Tuo | M

Li Lao six |15 Chinese |76.0|

---------Teacher-------------------

Hua Tuo | M

Zhang Mowgli | M

The Matchable interface is used to match the object, which returns true if the match succeeds, the object is joined to the collection, and the false match fails, and the object cannot be added to the collection.

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Java easyreport Import Excel, TXT data association Collection place Object (iii)