Spring3.0.5 获取表中自增的主键（mysql）

    public int addWsstxCotent(final WsstxContent wsstxContent) {

        final String sql = "insert into wsstx_content(sstx_type,sstx_content,sstx_title,opr_time,ts_tag) values(?,?,?,now(),?)";

//        this.jdbcTemplate.update(sql,

//                new Object[]{wsstxContent.getSstxType(), wsstxContent.getSstxContent(),wsstxContent.getSstxTitle(), wsstxContent.getTsTag()});

        KeyHolder keyHolder = new GeneratedKeyHolder();  

        this.jdbcTemplate.update(

                new PreparedStatementCreator() {

                    public PreparedStatement createPreparedStatement(Connection conn) throws SQLException {

                        PreparedStatement ps = conn.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);

                        ps.setInt(1, wsstxContent.getSstxType());

                        ps.setString(2, wsstxContent.getSstxContent());

                        ps.setString(3, wsstxContent.getSstxTitle());

                        ps.setString(4, wsstxContent.getTsTag());

                        return ps;

                    } 

                } ,  keyHolder);

        int generatedId = keyHolder.getKey().intValue();

        return generatedId;

    }