I. Correct Use of spring1. configuration of dwr. xmlCopy codeThe Code is as follows:CustomerManager is the Id registered by spring.2. Page callCopy codeThe Code is as follows:Ii. DescriptionIf the regular method used in the business logic class customerManagerImpl. java is not called by the static page, as shown inCopy codeThe Code is as follows:Public String test (){Return "hello ";}The following code cannot be executed:Copy codeThe Code is as follow
Dwrutil. addoptions ()
DWR usually needs to fill in a list box, mainly the addoptions and removealloptions methods. If you need to maintain the list when updating, you usually need the following code:
var sel = DWRUtil.getValue(id);DWRUtil.removeAllOptions(id);DWRUtil.addOptions(id, ...);DWRUtil.setValue(id, sel);Dwrutil. addoptions (selectid, array)
The string of each element in the array represents the value and text. The value is the same as the t
The options in it are determined by the In the dwrutil package in DWR, two methods are provided for real-timeThe two methods are:Dwrutil. removealloptions (P1); // P1 is select element IDDwrutil. addoptions (P1, P2); // P1 is select element ID, P2 is Int or string Arrays
For example:Page ElementsFunction Update (){Demo. getnumbers (createlist, $ ("bigselect"). Checked );}
// Callback functionFunction createlist (data){Dwrutil. removealloptions ("numli
Nowadays, ssh combinations are widely used in Java EE applications, and Ajax technologies are everywhere. We generally use struts compliant with the MVC design pattern to regulateProgramStructure, use the excellent ORM Component hibernate to simplify database access operations, use the system adhesive spring to improve development efficiency, and use Ajax for asynchronous access to improve user experience. Today, a demo is a simplified HRMS (Human Resource Management System). On SSH, spring has
Add the following to DWR. xml:Code:
This will convert the error into a specific error description,As you can see on the console. (Of course, only the description is required, and the stack is not displayed ).Because Project traffic is too large to view logs, the specific description of the error displayed on the front end is very important.
After adding the above Code, if the pop-up interface is: Missing Param or missing method convertThis is the
First talk about annotation syntax, save dwr.xml. (Since Java 5, now the more I look at a heap of configuration files more annoying, more and more like the annotation method directly simple)
First download the latest stable version of the Dwr.jar file into your project. (Do you need anything else?) No need, DWR is so simple.
Then add the following paragraph to the Web.xml
Org.relax.service.SectionManager, Org.relax.service
dojo and ExtJS (and Yui). Dojo is better suited for enterprise applications and product development because offline storage, DataGrid, 2D, 3D graphics, Chart, comet, and other components are important for enterprise applications (of course, these components will have to wait for a while to stabilize). For example, the BEA has used dojo in a product developed based on mashup technology. ExtJS: Beautiful and "easy to use", and powerful enough. It is preferred when there is a greater need for the
DWR in the global error message shows only an error pop-up dialog box, this display does not meet our specific output and capture the exception information we throw in the Java program, after research and testing, finally found a solution, examples are as follows:
Java class, Operations Adminuservo class public class Useroperater {public String Save (Adminuservo Adminuservo) throws exception{if ("". Equals (Adminuservo.getname ())) throw new Exception
Recently, there are projects to do this kind of server push function, in Baidu search for a long time many are using sockets or related framework to achieve, and my project is Js+java implementation of the system, originally wanted to use Websocket+mina to do it, tried half a day to do a good deal of trouble, decisively give up, continue to find, Later found DWR, browse the relevant data feel is good, simple configuration can achieve a powerful functi
Open the browser, enter "localhost", then delete, and then enter "www.baidu.com". I'll go! ---XINGYUNPI use DWR implementation without refreshing dynamic submission, the result, configured to remote server unexpectedly appeared such a mistake, pop-up error window, error message for
"CSRF security Error" , Zocha right check, finally know why ... General
Tomcat6 is not such a mistake, replace
TOMCAT7 will be like this, listen to a foreigner said, tom
DWR conversion mapMap type mapping in DWR's official document only one word.
...
But there are always problems with this configuration when dealing with mapWe have a function as follows
Public mapAt this point we are configuring this in the Dwr.xml file
Import Java.util.Map;
Import java.util.List;
Import Test. Reportdwrutil;
Reportdwrutil.getparametervalues (String, map]]>
Running programs always throws the following exceptions
Java.lang.ClassCast
Discretization: store all X axis coordinates in an array... sort. When entering a line segment, determine the discrete values corresponding to the left and right points by means of binary...
Scanning line .. it can be seen as a straight line
# Include # include # include # define MAXN 2222 using namespace std; struct line {double s, e, h, type; // records the starting and ending points of each line from the area of X weeks} L [MAXN]; // whether the bottom or the bottom is 1 High yes-1
Question address: http://acm.hdu.edu.cn/showproblem.php? PID = 1, 1542
This is my first scanned line question.
Method: Line Segment tree + scanning line.
Scan the X axis to the right of the X axis.
Sort the values of X first,
The area of the rectangle is the same.
Question: rectangular cutting.
[Cpp]# Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include Using namespace std;# Define inf 0x3f3f3f# Define uint
Question: Calculate the coverage area for n matrices.
Thought: I read others' answer reports
Given the coordinates in the lower left corner of a rectangle and the coordinates in the upper right corner are respectively: (x1, y1) and (x2, y2). For
Source: http://poj.org/problem? Id = 1151
Give some Rectangles and find the area of these rectangles.
Idea: the question of Line Segment tree + scanning line. Because the data is double, discretization is required.
Code:
# Include #
Scanning line problems
The first scanning line was followed by other people's code.
The tree does not have much content, so it is not put into the structure.
Map ing is very convenient and inefficient.
// 0 Ms 368 K g ++ # include # include #
Not to mention it first, because it is not quite understandable ~~~~~~
# Include # include # define N 105 using namespace STD; struct ELEM { double X; double S; double T; bool flag; }; struct node { int L; int R; int cover; double m;
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