使用ToStringBuilder重写toString方法

喜欢ヅ旅行 2022-07-12 08:49 233阅读 0赞

## 1.定义实体： ##

package com.osc.demo;
    
    import java.util.List;
    
    import org.apache.commons.lang.builder.ToStringBuilder;
    import org.apache.commons.lang.builder.ToStringStyle;
    
    public class Teacher { 
        private String name;
        private int age;
        private List<Student> student;
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        public int getAge() {
            return age;
        }
    
        public void setAge(int age) {
            this.age = age;
        }
    
        public List<Student> getStudent() {
            return student;
        }
    
        public void setStudent(List<Student> student) {
            this.student = student;
        }
    
        @Override
        public String toString() {
            //return new ToStringBuilder(this,ToStringStyle.SHORT_PREFIX_STYLE).append("name", this.name).append("age",this.age).append("student",this.student).toString();
            return ToStringBuilder.reflectionToString(this,ToStringStyle.SHORT_PREFIX_STYLE);
        }
    }

package com.osc.demo;
    
    import org.apache.commons.lang.builder.ToStringBuilder;
    import org.apache.commons.lang.builder.ToStringStyle;
    
    public class Student { 
        private String name;
        private int age;
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        public int getAge() {
            return age;
        }
    
        public void setAge(int age) {
            this.age = age;
        }
    
        @Override
        public String toString() {
            //return new ToStringBuilder(this,ToStringStyle.SHORT_PREFIX_STYLE).append("name", this.name).append("age",this.age).toString();
            return ToStringBuilder.reflectionToString(this,ToStringStyle.SHORT_PREFIX_STYLE);
        }
    }

2.测试

package com.osc.demo;
    
    import java.util.ArrayList;
    import java.util.List;
    
    public class Test { 
        public static void main(String[] args) {
            Student studentOne = new Student();
            studentOne.setName("学生");
            studentOne.setAge(34);
            List<Student> studentList = new ArrayList<Student>();
            studentList.add(studentOne);
            Teacher teacher = new Teacher();
            teacher.setName("老师");
            teacher.setAge(33);
            teacher.setStudent(studentList);
            System.out.println(teacher);
        }
    }

输出结果：

Teacher\[name=陈冠希,age=33,student=\[Student\[name=张柏芝,age=34\]\]\]