package com.service;
import java.util.List;
import com.model.Users;
import com.model.UsersExample;
/**
*
* 创建者：
* @param
* @return
* @date： 日期：2017-12-29 时间：下午5:09:41
*/
public interface IUsersService {
public int insertUser(Users user);
public List getAllUsers(UsersExample example);
}
实现层：
package com.service.impl;
import java.util.List;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import com.mapper.UsersMapper;
import com.model.Users;
import com.model.UsersExample;
import com.service.IUsersService;
/**
*
* 创建者：
* @return
* @date： 日期：2017-12-29 时间：下午5:23:13
*/
@Service
public class UsertsServiceImpl implements IUsersService{
@Resource
private UsersMapper usersMapper;
/**
* 添加
*/
@Override
public int insertUser(Users users) {
int num=usersMapper.insert(users);
return num;
}
/**
*
* 查询
*/
@Override
public List getAllUsers(UsersExample example) {
List list=usersMapper.selectByExample(example);
return list;
}
}}
Mapper和sqlmap以及model,modelexample都是反向生成的
Mapper
package com.mapper;
import com.model.Users;
import com.model.UsersExample;
import java.util.List;
import org.apache.ibatis.annotations.Param;
public interface UsersMapper {
int countByExample(UsersExample example);
int deleteByExample(UsersExample example);
int deleteByPrimaryKey(Integer id);
int insert(Users record);
int insertSelective(Users record);
List selectByExample(UsersExample example);
Users selectByPrimaryKey(Integer id);
int updateByExampleSelective(@Param("record") Users record, @Param("example") UsersExample example);
int updateByExample(@Param("record") Users record, @Param("example") UsersExample example);
int updateByPrimaryKeySelective(Users record);
int updateByPrimaryKey(Users record);
}
sqlmap
and ${criterion.condition}
and ${criterion.condition} #{criterion.value}
and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
and ${criterion.condition}
#{listItem}
and ${criterion.condition}
and ${criterion.condition} #{criterion.value}
and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
and ${criterion.condition}
#{listItem}
id, name, age, pwd
delete from users
where id = #{id,jdbcType=INTEGER}
delete from users
insert into users (id, name, age,
pwd)
values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, #{age,jdbcType=INTEGER},
#{pwd,jdbcType=VARCHAR})
insert into users
id,
name,
age,
pwd,
#{id,jdbcType=INTEGER},
#{name,jdbcType=VARCHAR},
#{age,jdbcType=INTEGER},
#{pwd,jdbcType=VARCHAR},
update users
id = #{record.id,jdbcType=INTEGER},
name = #{record.name,jdbcType=VARCHAR},
age = #{record.age,jdbcType=INTEGER},
pwd = #{record.pwd,jdbcType=VARCHAR},
update users
set id = #{record.id,jdbcType=INTEGER},
name = #{record.name,jdbcType=VARCHAR},
age = #{record.age,jdbcType=INTEGER},
pwd = #{record.pwd,jdbcType=VARCHAR}
update users
name = #{name,jdbcType=VARCHAR},
age = #{age,jdbcType=INTEGER},
pwd = #{pwd,jdbcType=VARCHAR},
where id = #{id,jdbcType=INTEGER}
update users
set name = #{name,jdbcType=VARCHAR},
age = #{age,jdbcType=INTEGER},
pwd = #{pwd,jdbcType=VARCHAR}
where id = #{id,jdbcType=INTEGER}
model
package com.model;
public class Users {
private Integer id;
private String name;
private Integer age;
private String pwd;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name == null ? null : name.trim();
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd == null ? null : pwd.trim();
}
}
modelexample
package com.model;
import java.util.ArrayList;
import java.util.List;
public class UsersExample {
protected String orderByClause;
protected boolean distinct;
protected List oredCriteria;
public UsersExample() {
oredCriteria = new ArrayList();
}
public void setOrderByClause(String orderByClause) {
this.orderByClause = orderByClause;
}
public String getOrderByClause() {
return orderByClause;
}
public void setDistinct(boolean distinct) {
this.distinct = distinct;
}
public boolean isDistinct() {
return distinct;
}
public List getOredCriteria() {
return oredCriteria;
}
public void or(Criteria criteria) {
oredCriteria.add(criteria);
}
public Criteria or() {
Criteria criteria = createCriteriaInternal();
oredCriteria.add(criteria);
return criteria;
}
public Criteria createCriteria() {
Criteria criteria = createCriteriaInternal();
if (oredCriteria.size() == 0) {
oredCriteria.add(criteria);
}
return criteria;
}
protected Criteria createCriteriaInternal() {
Criteria criteria = new Criteria();
return criteria;
}
public void clear() {
oredCriteria.clear();
orderByClause = null;
distinct = false;
}
protected abstract static class GeneratedCriteria {
protected List criteria;
protected GeneratedCriteria() {
super();
criteria = new ArrayList();
}
public boolean isValid() {
return criteria.size() > 0;
}
public List getAllCriteria() {
return criteria;
}
public List getCriteria() {
return criteria;
}
protected void addCriterion(String condition) {
if (condition == null) {
throw new RuntimeException("Value for condition cannot be null");
}
criteria.add(new Criterion(condition));
}
protected void addCriterion(String condition, Object value, String property) {
if (value == null) {
throw new RuntimeException("Value for " + property + " cannot be null");
}
criteria.add(new Criterion(condition, value));
}
protected void addCriterion(String condition, Object value1, Object value2, String property) {
if (value1 == null || value2 == null) {
throw new RuntimeException("Between values for " + property + " cannot be null");
}
criteria.add(new Criterion(condition, value1, value2));
}
public Criteria andIdIsNull() {
addCriterion("id is null");
return (Criteria) this;
}
public Criteria andIdIsNotNull() {
addCriterion("id is not null");
return (Criteria) this;
}
public Criteria andIdEqualTo(Integer value) {
addCriterion("id =", value, "id");
return (Criteria) this;
}
public Criteria andIdNotEqualTo(Integer value) {
addCriterion("id <>", value, "id");
return (Criteria) this;
}
public Criteria andIdGreaterThan(Integer value) {
addCriterion("id >", value, "id");
return (Criteria) this;
}
public Criteria andIdGreaterThanOrEqualTo(Integer value) {
addCriterion("id >=", value, "id");
return (Criteria) this;
}
public Criteria andIdLessThan(Integer value) {
addCriterion("id <", value, "id");
return (Criteria) this;
}
public Criteria andIdLessThanOrEqualTo(Integer value) {
addCriterion("id <=", value, "id");
return (Criteria) this;
}
public Criteria andIdIn(List values) {
addCriterion("id in", values, "id");
return (Criteria) this;
}
public Criteria andIdNotIn(List values) {
addCriterion("id not in", values, "id");
return (Criteria) this;
}
public Criteria andIdBetween(Integer value1, Integer value2) {
addCriterion("id between", value1, value2, "id");
return (Criteria) this;
}
public Criteria andIdNotBetween(Integer value1, Integer value2) {
addCriterion("id not between", value1, value2, "id");
return (Criteria) this;
}
public Criteria andNameIsNull() {
addCriterion("name is null");
return (Criteria) this;
}
public Criteria andNameIsNotNull() {
addCriterion("name is not null");
return (Criteria) this;
}
public Criteria andNameEqualTo(String value) {
addCriterion("name =", value, "name");
return (Criteria) this;
}
public Criteria andNameNotEqualTo(String value) {
addCriterion("name <>", value, "name");
return (Criteria) this;
}
public Criteria andNameGreaterThan(String value) {
addCriterion("name >", value, "name");
return (Criteria) this;
}
public Criteria andNameGreaterThanOrEqualTo(String value) {
addCriterion("name >=", value, "name");
return (Criteria) this;
}
public Criteria andNameLessThan(String value) {
addCriterion("name <", value, "name");
return (Criteria) this;
}
public Criteria andNameLessThanOrEqualTo(String value) {
addCriterion("name <=", value, "name");
return (Criteria) this;
}
public Criteria andNameLike(String value) {
addCriterion("name like", value, "name");
return (Criteria) this;
}
public Criteria andNameNotLike(String value) {
addCriterion("name not like", value, "name");
return (Criteria) this;
}
public Criteria andNameIn(List values) {
addCriterion("name in", values, "name");
return (Criteria) this;
}
public Criteria andNameNotIn(List values) {
addCriterion("name not in", values, "name");
return (Criteria) this;
}
public Criteria andNameBetween(String value1, String value2) {
addCriterion("name between", value1, value2, "name");
return (Criteria) this;
}
public Criteria andNameNotBetween(String value1, String value2) {
addCriterion("name not between", value1, value2, "name");
return (Criteria) this;
}
public Criteria andAgeIsNull() {
addCriterion("age is null");
return (Criteria) this;
}
public Criteria andAgeIsNotNull() {
addCriterion("age is not null");
return (Criteria) this;
}
public Criteria andAgeEqualTo(Integer value) {
addCriterion("age =", value, "age");
return (Criteria) this;
}
public Criteria andAgeNotEqualTo(Integer value) {
addCriterion("age <>", value, "age");
return (Criteria) this;
}
public Criteria andAgeGreaterThan(Integer value) {
addCriterion("age >", value, "age");
return (Criteria) this;
}
public Criteria andAgeGreaterThanOrEqualTo(Integer value) {
addCriterion("age >=", value, "age");
return (Criteria) this;
}
public Criteria andAgeLessThan(Integer value) {
addCriterion("age <", value, "age");
return (Criteria) this;
}
public Criteria andAgeLessThanOrEqualTo(Integer value) {
addCriterion("age <=", value, "age");
return (Criteria) this;
}
public Criteria andAgeIn(List values) {
addCriterion("age in", values, "age");
return (Criteria) this;
}
public Criteria andAgeNotIn(List values) {
addCriterion("age not in", values, "age");
return (Criteria) this;
}
public Criteria andAgeBetween(Integer value1, Integer value2) {
addCriterion("age between", value1, value2, "age");
return (Criteria) this;
}
public Criteria andAgeNotBetween(Integer value1, Integer value2) {
addCriterion("age not between", value1, value2, "age");
return (Criteria) this;
}
public Criteria andPwdIsNull() {
addCriterion("pwd is null");
return (Criteria) this;
}
public Criteria andPwdIsNotNull() {
addCriterion("pwd is not null");
return (Criteria) this;
}
public Criteria andPwdEqualTo(String value) {
addCriterion("pwd =", value, "pwd");
return (Criteria) this;
}
public Criteria andPwdNotEqualTo(String value) {
addCriterion("pwd <>", value, "pwd");
return (Criteria) this;
}
public Criteria andPwdGreaterThan(String value) {
addCriterion("pwd >", value, "pwd");
return (Criteria) this;
}
public Criteria andPwdGreaterThanOrEqualTo(String value) {
addCriterion("pwd >=", value, "pwd");
return (Criteria) this;
}
public Criteria andPwdLessThan(String value) {
addCriterion("pwd <", value, "pwd");
return (Criteria) this;
}
public Criteria andPwdLessThanOrEqualTo(String value) {
addCriterion("pwd <=", value, "pwd");
return (Criteria) this;
}
public Criteria andPwdLike(String value) {
addCriterion("pwd like", value, "pwd");
return (Criteria) this;
}
public Criteria andPwdNotLike(String value) {
addCriterion("pwd not like", value, "pwd");
return (Criteria) this;
}
public Criteria andPwdIn(List values) {
addCriterion("pwd in", values, "pwd");
return (Criteria) this;
}
public Criteria andPwdNotIn(List values) {
addCriterion("pwd not in", values, "pwd");
return (Criteria) this;
}
public Criteria andPwdBetween(String value1, String value2) {
addCriterion("pwd between", value1, value2, "pwd");
return (Criteria) this;
}
public Criteria andPwdNotBetween(String value1, String value2) {
addCriterion("pwd not between", value1, value2, "pwd");
return (Criteria) this;
}
}
public static class Criteria extends GeneratedCriteria {
protected Criteria() {
super();
}
}
public static class Criterion {
private String condition;
private Object value;
private Object secondValue;
private boolean noValue;
private boolean singleValue;
private boolean betweenValue;
private boolean listValue;
private String typeHandler;
public String getCondition() {
return condition;
}
public Object getValue() {
return value;
}
public Object getSecondValue() {
return secondValue;
}
public boolean isNoValue() {
return noValue;
}
public boolean isSingleValue() {
return singleValue;
}
public boolean isBetweenValue() {
return betweenValue;
}
public boolean isListValue() {
return listValue;
}
public String getTypeHandler() {
return typeHandler;
}
protected Criterion(String condition) {
super();
this.condition = condition;
this.typeHandler = null;
this.noValue = true;
}
protected Criterion(String condition, Object value, String typeHandler) {
super();
this.condition = condition;
this.value = value;
this.typeHandler = typeHandler;
if (value instanceof List) {
this.listValue = true;
} else {
this.singleValue = true;
}
}
protected Criterion(String condition, Object value) {
this(condition, value, null);
}
protected Criterion(String condition, Object value, Object secondValue, String typeHandler) {
super();
this.condition = condition;
this.value = value;
this.secondValue = secondValue;
this.typeHandler = typeHandler;
this.betweenValue = true;
}
protected Criterion(String condition, Object value, Object secondValue) {
this(condition, value, secondValue, null);
}
}
}
Android中的Toast是一种简易的消息提示框，toast提示框不能被用户点击，toast会根据用户设置的显示时间后自动消失。
创建Toast
两个方法创建Toast
makeText(Context context, int resId, int duration)
参数：context是toast显示在
angular.identiy 描述: 返回它第一参数的函数. 此函数多用于函数是编程. 使用方法: angular.identity(value); 参数详解: Param Type Details value
*
to be returned. 返回值: 传入的value 实例代码:
<!DOCTYPE HTML>
Hierarchical Queries
If a table contains hierarchical data, then you can select rows in a hierarchical order using the hierarchical query clause:
hierarchical_query_clause::=
start with condi
初次接触到socket网络编程，也参考了网络上众前辈的文章。尝试自己也写了一下，记录下过程吧：
服务端：（接收客户端消息并把它们打印出来）
public class SocketServer {
private List<Socket> socketList = new ArrayList<Socket>();
public s
接着编辑系统变量的Path：
接在之前的变量值后面就好。最后来检测下：打开命令行，输入mvn -v 如果出现下图的信息，那么恭喜你，配置成功了！当然，信息可能有些许出入，如版本不同等，这些不用在意。
打开来一张
