第10节

1.熟悉快捷键生成setter/getter、toString、constructor
	2.resultset转对象

testJDBC/JDBCDemo1/src/com/msb/bean/Emp.java

@@ -0,0 +1,107 @@
+package com.msb.bean;
+
+import java.io.Serializable;
+import java.util.Date;
+
+public class Emp implements Serializable {
+    private Integer empno;
+    private String ename;
+    private String job;
+    private Integer mgr;
+    private Date hiredate;
+    private Double sal;
+    private Double comm;
+    private Integer deptno;
+
+    public Emp() {
+    }
+
+    public Emp(Integer empno, String ename, String job, Integer mgr, Date hiredate, Double sal, Double comm, Integer deptno) {
+        this.empno = empno;
+        this.ename = ename;
+        this.job = job;
+        this.mgr = mgr;
+        this.hiredate = hiredate;
+        this.sal = sal;
+        this.comm = comm;
+        this.deptno = deptno;
+    }
+
+    public Integer getEmpno() {
+        return empno;
+    }
+
+    public void setEmpno(Integer empno) {
+        this.empno = empno;
+    }
+
+    public String getEname() {
+        return ename;
+    }
+
+    public void setEname(String ename) {
+        this.ename = ename;
+    }
+
+    public String getJob() {
+        return job;
+    }
+
+    public void setJob(String job) {
+        this.job = job;
+    }
+
+    public Integer getMgr() {
+        return mgr;
+    }
+
+    public void setMgr(Integer mgr) {
+        this.mgr = mgr;
+    }
+
+    public Date getHiredate() {
+        return hiredate;
+    }
+
+    public void setHiredate(Date hiredate) {
+        this.hiredate = hiredate;
+    }
+
+    public Double getSal() {
+        return sal;
+    }
+
+    public void setSal(Double sal) {
+        this.sal = sal;
+    }
+
+    public Double getComm() {
+        return comm;
+    }
+
+    public void setComm(Double comm) {
+        this.comm = comm;
+    }
+
+    public Integer getDeptno() {
+        return deptno;
+    }
+
+    public void setDeptno(Integer deptno) {
+        this.deptno = deptno;
+    }
+
+    @Override
+    public String toString() {
+        return "Emp{" +
+                "empno=" + empno +
+                ", ename='" + ename + '\'' +
+                ", job='" + job + '\'' +
+                ", mgr=" + mgr +
+                ", hiredate=" + hiredate +
+                ", sal=" + sal +
+                ", comm=" + comm +
+                ", deptno=" + deptno +
+                '}';
+    }
+}

testJDBC/JDBCDemo1/src/com/msb/test1/TestJDBC5.java

@@ -1,6 +1,10 @@
 package com.msb.test1;
 
+import com.msb.bean.Emp;
+
 import java.sql.*;
+import java.util.ArrayList;
+import java.util.List;
 
 public class TestJDBC5 {
     public static String driver = "com.mysql.cj.jdbc.Driver";
@@ -10,10 +14,15 @@ public class TestJDBC5 {
 
 
     public static void main(String[] args) {
-        testQuery();
+        List<Emp> list = testQuery();
+        for (Emp emp : list) {
+            System.out.println(emp);
+        }
     }
 
-    public static void testQuery() {
+    public static List<Emp> testQuery() {
+        List<Emp> result = null;
+
         Connection connection = null;
         Statement statement = null;
         ResultSet resultSet = null;
@@ -31,6 +40,7 @@ public class TestJDBC5 {
             statement = connection.createStatement();
             String sql = "select * from emp;";
             resultSet = statement.executeQuery(sql);
+            result = new ArrayList<Emp>();
             while (resultSet.next()) {
                 int empno = resultSet.getInt("empno");
                 String ename = resultSet.getString("ename");
@@ -40,11 +50,14 @@ public class TestJDBC5 {
                 double sal = resultSet.getDouble("sal");
                 double comm = resultSet.getDouble("comm");
                 int deptno = resultSet.getInt("deptno");
-                System.out.println("" + empno + "\t" + ename + "\t" + job + "\t" + mgr + "\t" + hiredate + "\t" + sal + "\t" + comm + "\t" + deptno + "\t");
+                Emp emp = new Emp(empno, ename, job, mgr, hiredate, sal, comm, deptno);
+                result.add(emp);
+            }
         }
-        } catch (Exception e) {
+        catch (Exception e) {
             e.printStackTrace();
-        } finally {
+        }
+        finally {
             try {
                 if (resultSet != null) {
                     resultSet.close();
@@ -55,9 +68,12 @@ public class TestJDBC5 {
                 if (connection != null) {
                     connection.close();
                 }
-            } catch (SQLException e) {
+            }
+            catch (SQLException e) {
                 e.printStackTrace();
             }
         }
+
+        return result;
     }
 }