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ReadfrmFromDatabase.java
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ReadfrmFromDatabase.java
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package com.fr.demo;
import com.fr.io.utils.ResourceIOUtils;
import com.fr.web.weblet.Formlet;
import com.fr.form.main.Form;
import javax.servlet.http.HttpServletRequest;
import com.fr.log.FineLoggerFactory;
import java.io.InputStream;
import java.sql.Blob;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.Map;
public class ReadfrmFromDatabase extends Formlet {
public Form createForm(HttpServletRequest reportletRequest) {
Form form= new Form();
String name = reportletRequest.getParameter("reportname").toString();
try {
// define data connection (modify according to actual database info)
String driver = "com.mysql.jdbc.Driver";
String url = "jdbc:mysql://localhost:3306/test";
String user = "root";
String pass = "123456";
Class.forName(driver);
Connection conn = DriverManager.getConnection(url, user, pass);
// 从数据库中读模板
String sql = "select B from report where A = '" + name
+ "'";
Statement smt = conn.createStatement();
ResultSet rs = smt.executeQuery(sql);
while (rs.next()) {
Blob blob = rs.getBlob(1);
FineLoggerFactory.getLogger().info(blob.toString());
InputStream ins = blob.getBinaryStream();
form.readStream(ins);
}
} catch (Exception e) {
e.printStackTrace();
}
System.out.println(ResourceIOUtils.getRealPath("assets"));
return form;
}
@Override
public void setParameterMap(Map<String, Object> arg0) {
// TODO Auto-generated method stub
}
}