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代码案例:
: ?$ O- ^& M; ^" ~- package com.cjg.servlet;! O0 z5 U% _1 {- j/ o$ D+ u! U* ~
- ! ~! Y @5 I$ e H% g E0 \
- import java.io.IOException;& g5 G4 X* ?1 K8 Q3 D" r7 U$ r
- import java.text.SimpleDateFormat;5 A B, S4 x' P2 P7 ]' m) v8 L9 {) H
- import javax.servlet.ServletException;
: ]; I: U/ }) P - import javax.servlet.http.*;
' w1 A& J6 T4 Y8 `# ]' v) | - import com.cjg.tool.*;
0 L+ A! N) }; W& G+ Y; I$ y% C3 a
& ]; ?( [% H5 {# K- N- public class AddMessageServlet extends HttpServlet {, \. ~: @7 b- Z( J0 ?6 |* E2 P9 X
- private static final long serialVersionUID = -8349454122547148005L;
1 H" e1 |/ S/ y0 I0 W - : ?. u8 j a/ w: f" U. I
- public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
# N# X$ P1 t, a0 m3 r; ~ - String sql = "insert into guestbook (id,name,email,phone,title,content,time) values(gb_seq.nextval,?,?,?,?,?,?)";
% w- ^7 e) p# V7 s - int result = 0;
/ _) }! Z1 V: f0 h" } - String message = "";; p2 d q+ o8 q5 D
- String name = request.getParameter("name");& T) U. {; v2 i- S
- String title = request.getParameter("title");4 d$ w2 C4 N; Y4 u' U' T0 R! F. j0 V$ d
- * o* l( |1 U! V# c: p7 z/ [
- if (StringTool.validateNull(name)) {
: L- o+ {' d% f" D0 o - message = "对不起,姓名不能为空,请您重新输入!<br>";) I7 N6 g' X6 ^" V1 u- @% \
- } else if (StringTool.validateNull(title)) {
1 V( \6 R" c* ~ q" j - message = "对不起,主题不能为空,请您重新输入!<br>";
4 _! @0 P; z% e - } else {
" g& x6 E6 B9 X" ~2 E' s0 V - SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
0 x# V1 ~ c* V5 x5 P! a1 ` - String param[] = { StringTool.filterHtml(name), StringTool.filterHtml(request.getParameter("email")),2 o4 G. s; U5 I3 E
- StringTool.filterHtml(request.getParameter("phone")), StringTool.filterHtml(title),9 a) e5 }: P! R O' H1 X3 C+ i: G
- request.getParameter("content"), sdf.format(new java.util.Date()) };7 P2 n5 Q% F* @- I( r9 R5 `7 I
- OracleTool db = new OracleTool("java:/comp/env/jdbc/oracleds");0 \' X8 [- x7 h( ~/ x5 {
- db.init();$ u5 s* b# T( c% n Q6 z
- result = db.update(sql, param);
+ r+ X Q3 v7 B - if (result == 0) {
: n3 s- a) k, ^& O" {+ e - message = "对不起,添加留言不成功,请您重新输入!";
0 u. u- T/ M$ L9 w! Y | - } else {
/ @/ E ?) h, _4 x1 u! j - message = "祝贺您,成功添加留言。";. G! `4 V1 @2 c8 b" ?
- }
# S, P1 t5 ?" v+ F - }: p2 U2 ?# x1 B2 g' a, x/ H p
- request.setAttribute("message", message);
: ^9 X2 }& E X. P2 [ - request.getRequestDispatcher("/addResult.jsp").forward(request, response);
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复制代码- package com.cjg.servlet;
# u0 ~; H5 Y3 `. V2 [. N d& Z( C9 t U - import java.io.IOException;! ]# y+ I* i. {1 E* f* ?
- import java.util.List;6 e) V9 C% I% w5 Z) V; M7 i# t& |
- import javax.servlet.ServletException;
k1 n' y( ?" N- c- _" O - import javax.servlet.http.*;: X. T. w2 J5 R! o3 J
- import org.apache.commons.dbutils.handlers.BeanListHandler;
% ? D0 \, T( @. `3 S) X9 b - , D3 k- U1 N' F+ ?& M
- import com.cjg.tool.OracleTool;
+ {7 m7 u: c! s
. K0 h: A0 B! K' L0 K- public class ManageServlet extends HttpServlet {8 u) e; r8 M& w; `% O
- OracleTool db = null;! M1 s/ p9 ~) N% E0 X, {' U8 W
- private static final long serialVersionUID = 204655027689309554L;
( M4 |' W9 A2 o# [
$ ]2 I5 m2 n& I8 i5 n8 Z ]! u- public void edit(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
4 ~; U6 i1 x) N - String params[] = { request.getParameter("id") };
3 c; J8 R \: m4 e2 q+ F0 I& U C - String sql = "select * from guestbook where id=?";" y2 u1 C2 R/ R8 \
- List list = (List) db.query(sql, params, new BeanListHandler(MessageBook.class));9 N3 d5 ^; c& V1 z/ ?6 B
- request.setAttribute("guestbook.admin.edit", list.get(0)); ( ]6 s" G4 J* Q8 f" H6 \
- request.getRequestDispatcher("/admin/secure/edit.jsp").forward(request, response);8 c5 ]2 J' n( \- a
- }2 v6 `4 S4 P$ A K" Q
- 5 N! J0 L' Q8 k. ~2 ?0 B) A0 K7 E
- public void update(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
1 W( r( u1 o$ D/ g6 g b - String params[] = { request.getParameter("name"), request.getParameter("email"), request.getParameter("phone"),
5 A$ V) b/ i# r7 i - request.getParameter("title"), request.getParameter("content"), request.getParameter("id") };
" }* J- U6 m% U8 O' V7 [* ^ - int i = db.update("update guestbook set name=?,email=?,phone=?,title=? ,content=? where id=?", params);
7 O* n0 j5 ^) ]2 b - if (i == 1) {
: `' i: O( a1 i - request.setAttribute("guestbook.admin.update.message", "更新成功!");) S$ T# d, L2 d& [* v8 v
- MessageBook gb = new MessageBook();
5 Y+ X/ k0 {: a, `( t" w9 P5 } - gb.setId(Integer.parseInt(request.getParameter("id")));
. d$ ~6 F7 y/ V3 T& F - gb.setName(request.getParameter("name")); `5 F3 ~0 R- r5 N
- gb.setEmail(request.getParameter("email"));$ R# ?" x" C( N4 [2 i+ O7 L }
- gb.setPhone(request.getParameter("phone"));
2 J$ N! D! y4 y) h7 `/ s - gb.setTitle(request.getParameter("title"));
% N \/ ?" W# D1 E$ G - gb.setContent(request.getParameter("content"));
% {! h$ @: M. s - request.setAttribute("guestbook.admin.edit", gb);/ U0 e4 } O3 Q4 |% H( q+ A& \
- } else {
; d% L" j+ g' Q& c - request.setAttribute("guestbook.admin.update.message", "更新失败!");
% P* Z+ S' _$ l, U9 t& P' F& v - } request.getRequestDispatcher("/admin/secure/updateResult.jsp").forward(request, response);4 M) D7 y% k; {) r
- }
2 y- W; W6 q) i5 I/ Z, F1 { - % {6 v7 i2 H6 m6 Q( X
- public void delete(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {; @& E/ y0 J( [" z0 ^
- String params[] = { request.getParameter("id") };0 i' L9 C+ J8 ~% T) X$ V0 k
- int i = db.update("delete from guestbook where id=?", params);
6 |4 x# Y4 A7 Y5 s! Y8 w - if (i == 1) {
6 _8 M6 X" v7 n6 s5 n. f - request.setAttribute("guestbook.admin.delete.message", "删除成功");( |- I2 [. ]5 D" F
- } else {
0 r- j" e U$ x - request.setAttribute("guestbook.admin.delete.message", "删除失败");: V4 g/ S4 y/ [; Y$ [) Z1 p% V
- } request.getRequestDispatcher("/admin/secure/deleteResult.jsp").forward(request, response);: }# U6 i. }9 C$ A- m0 N
- }
/ j* W% P' i& J; Q4 r$ |) |+ K D
* ?* I+ x. d* K1 X. v- public void list(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
# }$ X3 i9 E' Q" k - List list = (List) db.query("select id,name,title from guestbook order by id desc", null, new BeanListHandler(3 P% Y3 N6 [: B% P. ?* t. K c7 J
- MessageBook.class));
% z% [4 G/ b5 K4 Y3 w# X - request.setAttribute("guestbook.admin.list", list);
9 A7 X! F7 w. n7 q" r( p; T - request.getRequestDispatcher("/admin/secure/list.jsp").forward(request, response);! L# X% \9 N& E
- }5 [5 H4 p8 g/ j0 G0 q. v/ {( q
' |- M9 c, n% ~1 W$ E1 c- public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {* L$ i6 ~1 H+ r9 \9 l
- db = new OracleTool("java:/comp/env/jdbc/oracleds");
( Z8 C1 G# w# g1 D# }$ u - db.init();: b6 |/ o0 E, p d6 c) S$ h1 B
- String method = request.getParameter("q");- H; V. X5 ~9 B- h! v4 y
- if(method==null){
A/ Y Z( t* m - method="list";
& r: ~9 g: ^# U) |% j F6 U. Z* N - } # l% m: Y! t' C2 S. l4 q* D& y$ M
- if (method.equals("edit")) {
3 U6 e) j/ t7 C - edit(request, response);' f& K5 D; f& E. g, F
- } else if (method.equals("delete")) { ~" r9 `) o# o" J, V
- delete(request, response);
( V v! C+ h; y$ K8 m; ?9 s. ] - } else if (method.equals("update")) {
. [) ?+ N: [% S3 V - update(request, response);
9 w) ]3 X+ h' q: h9 t( F - } else {
6 ~$ n1 c8 n( ?3 L; n5 ?3 H - list(request, response);
/ U7 e% u7 Q5 L! N" \/ e - }
4 N# i- v2 o# r i: r$ q - }
$ \1 ~: \, i9 R% L$ _' c; a4 t
" s# r9 p4 Y" @0 L- F: m- public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {% J; b: Z. `# r& `6 l, W! c5 n( r
- doGet(request, response);
0 k4 ?$ Y4 Y3 ~3 a$ T# D' ~7 p - }
7 n f: }* ~# h5 y p7 d9 O - }
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