protected boolean passwordsMatch(String username, String password) {
boolean match=false;
try {
String sqlStmt= select password from userverify where
username=' +username+ ' ;
Statement stmt=con.createStatement();
ResultSet rs=stmt.executeQuery(stmt);
if (rs.next()) {
ResultSetMetaData rsmd=rs.getMetaData();
if rsmd.getColumnCount()>0) {
String thePassword=rs.getString(1);
if (thePassword.equals(password)) match=true;
}
}
} catch (SQLException e) e.printStacktrace();
return match;
}
Figure 68. Java code for the passwordsMatch method
3. If the login is to be successful, we must populate the Session object, using
the putValue method, with the following information:
a. username, password
This information is already available in the username and password
variables. Hence, the code is simply:
session.putValue( username , username);
sessoin.putValue( password , password);
b. user information
The user information, for example, an address or e mail, must be
obtained from the USERINFO database table. We perform a select of
the relevant information, then iterate through the list of USERINFO
columns to be populated into the Session object.
We predefine a string array called infoCols, which contains a list of
values that we intend to obtain from the select statement, and then
place it in the Session object (in effect, using this array of strings as a
filter). The code looks something like Figure 69 on page 92.
Chapter 3. Building the Web server
91




  

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