spring jdbc踩坑日記，new JdbcTemplate 為null導致UserDao一直為null

  private DataSource datasource;
    private JdbcTemplate jdbcTemplateObject;

    //設置注入
    public void setdatasource(DataSource ds) {
        this.datasource = ds;
        System.out.println("xxxxxxxxxxxxxxxxx");
        System.out.println(ds);
        this.jdbcTemplateObject = new JdbcTemplate(datasource);
    }

代碼如上

排查半天發現 spring注入時，名稱的大小寫必須為峰駝式

改成

 private DataSource datasource;
    private JdbcTemplate jdbcTemplateObject;

    //設置注入
    public void setDataSource(DataSource ds) {
        this.datasource = ds;
        System.out.println("xxxxxxxxxxxxxxxxx");
        System.out.println(ds);
        this.jdbcTemplateObject = new JdbcTemplate(datasource);
    }

成功查詢