package com.pdsu.book.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.google.gson.Gson;
import com.pdsu.book.user.Book;
public class SelectServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public SelectServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request
* the request send by the client to the server
* @param response
* the response send by the server to the client
* @throws ServletException
* if an error occurred
* @throws IOException
* if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doPost(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
response.setCharacterEncoding("utf-8");
request.setCharacterEncoding("utf-8");
String url = "jdbc:sqlserver://127.0.0.1:1433;databaseName=lib_books;user=sa;password=1234";// sa身份連接
String bookinfo = request.getParameter("bookinfo");
System.out.println(bookinfo);
// String password = request.getParameter("password");
// String username = "xiaoming";
// String password = "xiaoming";
String result = "";
Connection con = null;
Statement stmt = null;
ResultSet rs = null;
StringBuilder builder = new StringBuilder();
try {
// Establish the connection.
System.out.println("begin.");
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
con = DriverManager.getConnection(url);
System.out.println("end.");
// Create and execute an SQL statement that returns some data.
String SQL = "select * from book where book_ISBN='" + bookinfo
+ "'";
stmt = con.createStatement();
rs = stmt.executeQuery(SQL);
// Iterate through the data in the result set and display it.
List<Book> books = new ArrayList<Book>();
while (rs.next()) {
// System.out.println(rs.getString(2) + " " + rs.getString(1));
// builder.append(rs.getString("username") +
// ">>>>>>>>"+rs.getString("password"));
Book book = new Book(rs.getString("book_name"),
rs.getString("book_id"), rs.getString("book_saveNum"),
rs.getString("book_price"), rs.getString("book_desc"),
rs.getString("book_location"),
rs.getString("book_author"), rs.getString("book_press"),
rs.getString("book_ISBN"), rs.getString("book_pressDate"),
rs.getString("book_type"), rs.getString("book_num"));
// (String bookName, String bookId, String bookSaveNum, String
// bookPrice, String bookDesc, String bookLocation, String
// bookAuthor, String bookPress, String bookISBN, String
// bookPressDate, String bookType, String bookNum)
books.add(book);
}
Gson gson = new Gson();
result = gson.toJson(books);
}
// Handle any errors that may have occurred.
catch (Exception e) {
e.printStackTrace();
}
finally {
if (rs != null)
try {
rs.close();
} catch (Exception e) {
}
if (stmt != null)
try {
stmt.close();
} catch (Exception e) {
}
if (con != null)
try {
con.close();
} catch (Exception e) {
}
}
out.println(result);
// System.out.println(result);
out.flush();
out.close();
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException
* if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
2、web.xml配置文件
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>bookselect</servlet-name>
<servlet-class>com.pdsu.book.servlet.BookSelectServlet</servlet-class>
</servlet>
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>BookDetailInfoServlet</servlet-name>
<servlet-class>com.pdsu.book.servlet.BookDetailInfoServlet</servlet-class>
</servlet>
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>BookNoticeInfo</servlet-name>
<servlet-class>com.pdsu.book.servlet.BookNoticeInfo</servlet-class>
</servlet>
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>LinkSQLServerTest</servlet-name>
<servlet-class>com.pdsu.book.servlet.LinkSQLServerTest</servlet-class>
</servlet>
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>LoginUserServlet</servlet-name>
<servlet-class>com.pdsu.book.servlet.LoginUserServlet</servlet-class>
</servlet>
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>SelectServlet</servlet-name>
<servlet-class>com.pdsu.book.servlet.SelectServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>bookselect</servlet-name>
<url-pattern>/bookselect</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>BookDetailInfoServlet</servlet-name>
<url-pattern>/BookDetail</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>BookNoticeInfo</servlet-name>
<url-pattern>/notice</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>LinkSQLServerTest</servlet-name>
<url-pattern>/test</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>LoginUserServlet</servlet-name>
<url-pattern>/login</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>SelectServlet</servlet-name>
<url-pattern>/select</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<login-config>
<auth-method>BASIC</auth-method>
</login-config>
</web-app>
3、Book實體類Class
package com.pdsu.book.user;
public class Book {
private String bookName;
private String bookId;
private String bookSaveNum;
public String getBookSaveNum() {
return bookSaveNum;
}
public void setBookSaveNum(String bookSaveNum) {
this.bookSaveNum = bookSaveNum;
}
private String bookPrice;
private String bookDesc;
private String bookLocation;
// 作者
private String bookAuthor;
// 出版社
private String bookPress;
private String bookISBN;
private String bookPressDate;
private String bookType;
private String bookNum;
public Book() {
super();
}
public Book(String bookName, String bookId, String bookSaveNum,
String bookPrice, String bookDesc, String bookLocation,
String bookAuthor, String bookPress, String bookISBN,
String bookPressDate, String bookType, String bookNum) {
super();
this.bookName = bookName;
this.bookId = bookId;
this.bookSaveNum = bookSaveNum;
this.bookPrice = bookPrice;
this.bookDesc = bookDesc;
this.bookLocation = bookLocation;
this.bookAuthor = bookAuthor;
this.bookPress = bookPress;
this.bookISBN = bookISBN;
this.bookPressDate = bookPressDate;
this.bookType = bookType;
this.bookNum = bookNum;
}
public String getBookName() {
return bookName;
}
public void setBookName(String bookName) {
this.bookName = bookName;
}
public String getBookId() {
return bookId;
}
public void setBookId(String bookId) {
this.bookId = bookId;
}
public String getBookPrice() {
return bookPrice;
}
public void setBookPrice(String bookPrice) {
this.bookPrice = bookPrice;
}
public String getBookDesc() {
return bookDesc;
}
public void setBookDesc(String bookDesc) {
this.bookDesc = bookDesc;
}
public String getBookLocation() {
return bookLocation;
}
public void setBookLocation(String bookLocation) {
this.bookLocation = bookLocation;
}
public String getBookAuthor() {
return bookAuthor;
}
public void setBookAuthor(String bookAuthor) {
this.bookAuthor = bookAuthor;
}
public String getBookPress() {
return bookPress;
}
public void setBookPress(String bookPress) {
this.bookPress = bookPress;
}
public String getBookISBN() {
return bookISBN;
}
public void setBookISBN(String bookISBN) {
this.bookISBN = bookISBN;
}
public String getBookPressDate() {
return bookPressDate;
}
public void setBookPressDate(String bookPressDate) {
this.bookPressDate = bookPressDate;
}
public String getBookType() {
return bookType;
}
public void setBookType(String bookType) {
this.bookType = bookType;
}
public String getBookNum() {
return bookNum;
}
public void setBookNum(String bookNum) {
this.bookNum = bookNum;
}
}
