小编Kar*_*yan的帖子

我对编码密码有一些问题,我该怎么办呢.编码类型md5

digest(data text, type text) returns bytea;
CREATE OR REPLACE FUNCTION md(bytea) returns text AS $$
    SELECT encode(digest($1, 'sha1'), 'md5')
$$ LANGUAGE SQL STRICT IMMUTABLE;

INSERT INTO "login"(login, password, employee_id)
VALUES ( 'email',crypt('password', md('md5')), 1);

*** 错误 ***

ERROR: syntax error at or near "digest"
SQL state: 42601
Character: 1

我在将 java servlet 与 postgresql 连接时遇到了一些问题。如果可以，请帮助我

String dbName = "jdbc:postgresql://localhost/schedule_of_holidays";
        String dbDriver = "org.postgresql.Driver";

        Class.forName(dbDriver);
        Connection con = DriverManager.getConnection(dbName, userName,
                password);
        System.out.println("Got Connection");
        Statement statement = con.createStatement();
        String sql = "select id from registration";
        ResultSet rs = statement.executeQuery(sql);
        while (rs.next()) {
            System.out.println(rs.getInt("id"));
        }

我尝试删除会话，但无法做到这一点。

private boolean removeSession(HttpServletRequest request) {
    boolean success = false;
    HttpSession session = request.getSession(false);
    if (session != null) {
        request.getSession(true).invalidate();
        success = true;
    }
    return success;
}