public class BrandTest {
/*
* 查询所有
* */
@Test
public void testSelectAll() throws Exception {
Properties prop = new Properties();
System.out.println(System.getProperty("user.dir"));// 显示当前工作目录
prop.load(new FileInputStream("src/druid.properties"));
DataSource dataSource = DruidDataSourceFactory.createDataSource(prop);
Connection conn = dataSource.getConnection();
String sql = "select * from brand";
PreparedStatement pstmt = conn.prepareStatement(sql);
ResultSet rs = pstmt.executeQuery();
ArrayList<Brand> list = new ArrayList<>();
Brand brand = null;
while (rs.next()){
brand = new Brand();
brand.setId(rs.getInt("id"));
brand.setBrandName(rs.getString("brand_name"));
brand.setCompanyName(rs.getString("company_name"));
brand.setOrdered(rs.getInt("ordered"));
brand.setDescription(rs.getString("discription"));
brand.setStatus(rs.getInt("status"));
list.add(brand);
}
System.out.println(list);
conn.close();
rs.close();
pstmt.close();
}
/*
* 添加
* */
@Test
public void testAdd() throws Exception {
String brandName = "香飘飘";
String companyName = "香飘飘公司";
int ordered = 1;
String discription = "绕地球一圈！";
int status = 1;
Properties prop = new Properties();
System.out.println(System.getProperty("user.dir"));
prop.load(new FileInputStream("src/druid.properties"));
DataSource dataSource = DruidDataSourceFactory.createDataSource(prop);
Connection conn = dataSource.getConnection();
String sql = "insert into brand(brand_name, company_name, ordered, discription, status) values(?,?,?,?,?)";
PreparedStatement pstmt = conn.prepareStatement(sql);
pstmt.setString(1, brandName);
pstmt.setString(2, companyName);
pstmt.setInt(3, ordered);
pstmt.setString(4, discription);
pstmt.setInt(5, status);
int count = pstmt.executeUpdate();
if (count > 0){
System.out.println("添加成功！");
}else {
System.out.println("添加失败！");
}
conn.close();
pstmt.close();
}
/*
* 修改
* */
@Test
public void testUpdate() throws Exception {
String brandName = "香飘飘";
String companyName = "香飘飘公司";
int ordered = 100;
String discription = "绕地球一圈！再绕一圈!";
int status = 1;
int id = 8;
Properties prop = new Properties();
System.out.println(System.getProperty("user.dir"));
prop.load(new FileInputStream("src/druid.properties"));
DataSource dataSource = DruidDataSourceFactory.createDataSource(prop);
Connection conn = dataSource.getConnection();
String sql = "update brand set brand_name = ?, company_name = ?, ordered = ?, discription = ?, status = ? " +
"where id = ?";
PreparedStatement pstmt = conn.prepareStatement(sql);
pstmt.setString(1, brandName);
pstmt.setString(2, companyName);
pstmt.setInt(3, ordered);
pstmt.setString(4, discription);
pstmt.setInt(5, status);
pstmt.setInt(6, id);
int count = pstmt.executeUpdate();
if (count > 0){
System.out.println("修改成功！");
}else {
System.out.println("修改失败！");
}
conn.close();
pstmt.close();
}
/*
* 删除
* */
@Test
public void testDeleteById() throws Exception {
int id = 9;
Properties prop = new Properties();
System.out.println(System.getProperty("user.dir"));
prop.load(new FileInputStream("src/druid.properties"));
DataSource dataSource = DruidDataSourceFactory.createDataSource(prop);
Connection conn = dataSource.getConnection();
String sql = "delete from brand where id = ?";
PreparedStatement pstmt = conn.prepareStatement(sql);
pstmt.setInt(1, id);
int count = pstmt.executeUpdate();
if (count > 0){
System.out.println("删除成功！");
}else {
System.out.println("删除失败！");
}
conn.close();
pstmt.close();
}
}
druid.properties
driverClassName=com.mysql.jdbc.Driver
url=jdbc:mysql:///test?useSSL=false&useServerPrepStmts=true
username=
password=
initialSize=5
maxActive=10
maxWait=3000
Brand.java
public class Brand {
private Integer id;
private String brandName;
private String companyName;
private Integer ordered;
private String description;
private Integer status;
public Integer getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getBrandName() {
return brandName;
}
public void setBrandName(String brand_name) {
this.brandName = brand_name;
}
public String getCompanyName() {
return companyName;
}
public void setCompanyName(String company_name) {
this.companyName = company_name;
}
public Integer getOrdered() {
return ordered;
}
public void setOrdered(int ordered) {
this.ordered = ordered;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public Integer getStatus() {
return status;
}
public void setStatus(int status) {
this.status = status;
}
@Override
public String toString() {
return "Brand{" +
"id=" + id +
", brand_name='" + brandName + '\'' +
", company_name='" + companyName + '\'' +
", ordered=" + ordered +
", description='" + description + '\'' +
", status=" + status +
'}';
}
}