package com.mrcoder.mrentity.entity.master;
import java.io.Serializable;
public class Student implements Serializable {
private Long id;
private String name;
private int age;
private int grade;
public Student() {
}
public Student(String name, int age, int grade) {
this.name = name;
this.age = age;
this.grade = grade;
}
@Override
public String toString() {
return "Student{" +
"id=" + id +
", name='" + name + '\'' +
", age=" + age +
", grade=" + grade +
'}';
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
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 int getGrade() {
return grade;
}
public void setGrade(int grade) {
this.grade = grade;
}
}
entity/slave/Teacher
package com.mrcoder.mrentity.entity.slave;
import java.io.Serializable;
public class Teacher implements Serializable {
private Long id;
private String name;
private int age;
private int course;
public Teacher() {
}
public Teacher(String name, int age, int course) {
this.name = name;
this.age = age;
this.course = course;
}
@Override
public String toString() {
return "Teacher{" +
"id=" + id +
", name='" + name + '\'' +
", age='" + age + '\'' +
", course='" + course + '\'' +
'}';
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
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 int getCourse() {
return course;
}
public void setCourse(int course) {
this.course = course;
}
}
mapper/master/StudentMapper
package com.mrcoder.mrentity.mapper.master;
import com.mrcoder.mrentity.entity.master.Student;
import org.apache.ibatis.annotations.Select;
import java.util.List;
public interface StudentMapper {
// @Select("SELECT * FROM student")
List getList();
// @Select("SELECT * FROM student WHERE id = #{id}")
Student getById(Long id);
// @Insert("INSERT INTO student(age,grade,name) VALUES(#{age}, #{grade}, #{name})")
Integer insert(Student student);
// @Update("UPDATE student SET name=#{name},age=#{age}, grade=#{grade} WHERE id =#{id}")
Integer update(Student student);
// @Delete("DELETE FROM student WHERE id =#{id}")
Integer delete(Long id);
//注解方式，本项目不建议使用
@Select("SELECT * FROM student")
List getListByAnno();
}
mapper/slave/TeacherMapper
package com.mrcoder.mrentity.mapper.slave;
import com.mrcoder.mrentity.entity.slave.Teacher;
import java.util.List;
public interface TeacherMapper {
// @Select("SELECT * FROM teacher")
List getList();
// @Select("SELECT * FROM teacher WHERE id = #{id}")
Teacher getById(Long id);
// @Insert("INSERT INTO teacher(age,course,name) VALUES(#{age}, #{course}, #{name})")
void insert(Teacher teacher);
// @Update("UPDATE teacher SET name=#{name},age=#{age}, course=#{course} WHERE id =#{id}")
void update(Teacher teacher);
// @Delete("DELETE FROM teacher WHERE id =#{id}")
void delete(Long id);
}
resources/mapper/master/StudentMapper.xml
id, name, age, grade
INSERT INTO
student
(age,grade,name)
VALUES
(#{age}, #{grade}, #{name})
UPDATE
student
SET
age = #{age},
grade = #{grade},
name = #{name}
WHERE
id = #{id}
DELETE FROM
student
WHERE
id =#{id}
resources/mapper/master/TeacherMapper.xml
id, name, age, course
INSERT INTO
teacher
(age,course,name)
VALUES
(#{age}, #{course}, #{name})
UPDATE
teacher
SET
age = #{age},
course = #{course},
name = #{name}
WHERE
id = #{id}
DELETE FROM
teacher
WHERE
id =#{id}
androi中提到了布尔数组;
布尔数组默认的是false, 并且只会打印false或者是true
布尔数组的例子; 根据字符数组创建布尔数组
char[] c = {'p','u','b','l','i','c'};
//根据字符数组的长度创建布尔数组的个数
boolean[] b = new bool
文章摘自：http://blog.csdn.net/yangwawa19870921/article/details/7553181
在编写HQL时，可能会出现这种代码：
select a.name,b.age from TableA a left join TableB b on a.id=b.id
如果这是HQL，那么这段代码就是错误的，因为HQL不支持
1. 简单的for循环
public static void main(String[] args) {
for (int i = 1, y = i + 10; i < 5 && y < 12; i++, y = i * 2) {
System.err.println("i=" + i + " y="
异常信息本地化
Spring Security支持将展现给终端用户看的异常信息本地化，这些信息包括认证失败、访问被拒绝等。而对于展现给开发者看的异常信息和日志信息（如配置错误）则是不能够进行本地化的，它们是以英文硬编码在Spring Security的代码中的。在Spring-Security-core-x
近来工作中遇到这样的两个需求
1. 给个Date对象，找出该时间所在月的第一天和最后一天
2. 给个Date对象，找出该时间所在周的第一天和最后一天
需求1中的找月第一天很简单，我记得api中有setDate方法可以使用
使用setDate方法前，先看看getDate
var date = new Date();
console.log(date);
// Sat J
MyBatis的update元素的用法与insert元素基本相同，因此本篇不打算重复了。本篇仅记录批量update操作的
sql语句，懂得SQL语句，那么MyBatis部分的操作就简单了。 注意：下列批量更新语句都是作为一个事务整体执行，要不全部成功，要不全部回滚。
MSSQL的SQL语句
WITH R AS（
SELECT 'John' as name, 18 as
