Maybe look at the title is not very clear what the problem is , or illustrate it:
In MODEL, ACTION, BO , the definition of the class
class XModel {
private long id;
private String name;
//以下的get 、set的函数就不写了
//......
}
class XAction extends ActionSupport{
XBo xbo;
XModel xmodel;
public String list(){
List<XModel> l =xbo.getList(xmodel);
//打印成为JSON......
return null;
}
//以下的get 、set的函数就不写了
//......
}
class Bo{
//.....
public List<XModel> list(xmodel){
String hql="...... ";
/// 查询时，以model.id,xmodel.name作为条件
List<XModel> l;
if(!nullToSpace(xmodel.name).equal("")){
hql +=" where name=? ";
l=this.xdao.find(hql,new Object[]{xmodel.name});
}else
l=this.xdao.find(hql);
return l;
}
//......
}
So I use the computer A, when the query is initiated at the front end , submitted a query : xmodel.name = xx1,
Then my computer B , the access to this inquiry page, did not submit any query ; but found that the server retains the value of this xmodel.name = xx1 , returned results with the results on the computer the same as A this is what is wrong ?
------ Solution ---------------------------------------- ----
first , the second request in the execute method , the received xmodel object print look ( before the query )
Second, add a breakpoint to setXmodel way , look into a second did .
------ Solution ---------------------------------------- ----
struts request is a separate thread , so you will not have a shared module questions, suggestions, carefully testing .
------ Solution ---------------------------------------- ----
this question is one step debug it. A submission form is on the first or direct access to the url, direct url to access your words are executed get. Also you put that on the A value is set to 2 , then B and then visit to try to see if it will turn into 2
------ Solution -------------- ------------------------------
first request , I submitted to the parameters of the xmodel.name = xx1, XACTION variables xmodel be instantiated,
second request , we have to submit anything , theoretically xmodel should be NULL ( because if my first request, if you do not submit xmodel.name = xx1, then xmodel == null), but the print out or xmodel.name = xx1
The second time I said to setXmodel () method to add a breakpoint or add print statements to see if the implementation , you do not ?
------ Solution ---------------------------------------- ----
tSysDept What the hell , why is static.
------ Solution ---------------------------------------- ----
I feel this relationship with ssh2 did not set it ! It should be a matter of procedure , or debug it to find the problem , the top !
------ Solution ---------------------------------------- ----
sometimes less or more than a headache to write this ah.
------ For reference only -------------------------------------- -
this situation has appeared many times , is not configured deal with the problem ?
struts interceptor configuration
<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.FilterDispatcher
</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
struts.properties file configuration
### Struts default properties
###(can be overridden by a struts.properties file in the root of the classpath)
###
### Specifies the Configuration used to configure Struts
### one could extend org.apache.struts2.config.Configuration
### to build one's customize way of getting the configurations parameters into Struts
# struts.configuration=org.apache.struts2.config.DefaultConfiguration
### This can be used to set your default locale and encoding scheme
# struts.locale=en_US
struts.i18n.encoding=utf-8
### if specified, the default object factory can be overridden here
### Note: short-hand notation is supported in some cases, such as "spring"
### Alternatively, you can provide a com.opensymphony.xwork2.ObjectFactory subclass name here
struts.objectFactory = spring
### specifies the autoWiring logic when using the SpringObjectFactory.
### valid values are: name, type, auto, and constructor (name is the default)
struts.objectFactory.spring.autoWire = name
### indicates to the struts-spring integration if Class instances should be cached
### this should, until a future Spring release makes it possible, be left as true
### unless you know exactly what you are doing!
### valid values are: true, false (true is the default)
struts.objectFactory.spring.useClassCache = true
### if specified, the default object type determiner can be overridden here
### Note: short-hand notation is supported in some cases, such as "tiger" or "notiger"
### Alternatively, you can provide a com.opensymphony.xwork2.util.ObjectTypeDeterminer implementation name here
### Note: By default, com.opensymphony.xwork2.util.DefaultObjectTypeDeterminer is used which handles type detection
### using generics. com.opensymphony.xwork2.util.GenericsObjectTypeDeterminer was deprecated since XWork 2, it's
### functions are integrated in DefaultObjectTypeDeterminer now.
### To disable tiger support use the "notiger" property value here.
#struts.objectTypeDeterminer = tiger
#struts.objectTypeDeterminer = notiger
### Parser to handle HTTP POST requests, encoded using the MIME-type multipart/form-data
# struts.multipart.parser=cos
# struts.multipart.parser=pell
struts.multipart.parser=jakarta
# uses javax.servlet.context.tempdir by default
struts.multipart.saveDir=
struts.multipart.maxSize=20971520
### Load custom property files (does not override struts.properties!)
# struts.custom.properties=application,org/apache/struts2/extension/custom
### How request URLs are mapped to and from actions
#struts.mapper.class=org.apache.struts2.dispatcher.mapper.DefaultActionMapper
### Used by the DefaultActionMapper
### You may provide a comma separated list, e.g. struts.action.extension=action,jnlp,do
struts.action.extension=do
### Used by FilterDispatcher
### If true then Struts serves static content from inside its jar.
### If false then the static content must be available at <context_path>/struts
struts.serve.static=true
### Used by FilterDispatcher
### This is good for development where one wants changes to the static content be
### fetch on each request.
### NOTE: This will only have effect if struts.serve.static=true
### If true -> Struts will write out header for static contents such that they will
### be cached by web browsers (using Date, Cache-Content, Pragma, Expires)
### headers).
### If false -> Struts will write out header for static contents such that they are
### NOT to be cached by web browser (using Cache-Content, Pragma, Expires
### headers)
struts.serve.static.browserCache=true
### Set this to false if you wish to disable implicit dynamic method invocation
### via the URL request. This includes URLs like foo!bar.action, as well as params
### like method:bar (but not action:foo).
### An alternative to implicit dynamic method invocation is to use wildcard
### mappings, such as <action name="*/*" method="{2}" class="actions.{1}">
struts.enable.DynamicMethodInvocation = true
### Set this to true if you wish to allow slashes in your action names. If false,
### Actions names cannot have slashes, and will be accessible via any directory
### prefix. This is the traditional behavior expected of WebWork applications.
### Setting to true is useful when you want to use wildcards and store values
### in the URL, to be extracted by wildcard patterns, such as
### <action name="*/*" method="{2}" class="actions.{1}"> to match "/foo/edit" or
### "/foo/save".
struts.enable.SlashesInActionNames = false
### use alternative syntax that requires %{} in most places
### to evaluate expressions for String attributes for tags
struts.tag.altSyntax=true
### when set to true, Struts will act much more friendly for developers. This
### includes:
### - struts.i18n.reload = true
### - struts.configuration.xml.reload = true
### - raising various debug or ignorable problems to errors
### For example: normally a request to foo.action?someUnknownField=true should
### be ignored (given that any value can come from the web and it
### should not be trusted). However, during development, it may be
### useful to know when these errors are happening and be told of
### them right away.
struts.devMode = false
### when set to true, resource bundles will be reloaded on _every_ request.
### this is good during development, but should never be used in production
struts.i18n.reload=false
### Standard UI theme
### Change this to reflect which path should be used for JSP control tag templates by default
struts.ui.theme=xhtml
struts.ui.templateDir=template
#sets the default template type. Either ftl, vm, or jsp
struts.ui.templateSuffix=ftl
### Configuration reloading
### This will cause the configuration to reload struts.xml when it is changed
struts.configuration.xml.reload=false
### Location of velocity.properties file. defaults to velocity.properties
struts.velocity.configfile = velocity.properties
### Comma separated list of VelocityContext classnames to chain to the StrutsVelocityContext
struts.velocity.contexts =
### Location of the velocity toolbox
struts.velocity.toolboxlocation=
### used to build URLs, such as the UrlTag
struts.url.http.port = 80
struts.url.https.port = 443
### possible values are: none, get or all
struts.url.includeParams = get
### Load custom default resource bundles
# struts.custom.i18n.resources=testmessages,testmessages2
### workaround for some app servers that don't handle HttpServletRequest.getParameterMap()
### often used for WebLogic, Orion, and OC4J
struts.dispatcher.parametersWorkaround = false
### configure the Freemarker Manager class to be used
### Allows user to plug-in customised Freemarker Manager if necessary
### MUST extends off org.apache.struts2.views.freemarker.FreemarkerManager
#struts.freemarker.manager.classname=org.apache.struts2.views.freemarker.FreemarkerManager
### Enables caching of FreeMarker templates
### Has the same effect as copying the templates under WEB_APP/templates
struts.freemarker.templatesCache=false
### Enables caching of models on the BeanWrapper
struts.freemarker.beanwrapperCache=false
### See the StrutsBeanWrapper javadocs for more information
struts.freemarker.wrapper.altMap=true
### configure the XSLTResult class to use stylesheet caching.
### Set to true for developers and false for production.
struts.xslt.nocache=false
### A list of configuration files automatically loaded by Struts
struts.configuration.files=struts-default.xml,struts-plugin.xml,struts.xml
### Whether to always select the namespace to be everything before the last slash or not
struts.mapper.alwaysSelectFullNamespace=false
------ For reference only ----------------------------------- ----
first request , I submitted to the parameters of the xmodel.name = xx1, XACTION variables xmodel be instantiated,
second request , we have to submit anything , theoretically xmodel should be NULL ( because if my first request, if you do not submit xmodel.name = xx1, then xmodel == null), but the print out or xmodel.name = xx1
------ For reference only ---------------------------------- -----
according to your ideas,
Results same as the original :
1, ACTION code is:
2, the first visit with GOOLE browser , submitted
tSysDept.id = 111
tSysDept.deptName = deptName01
results are as follows :
3, a second visit with IE, submit only tSysDept.id = 123
results are as follows :
Obviously, when user A when the application is made inquiries , submitted tSysDept.deptName = deptName01, then the user B, after making inquiries in the A
server returns the result is tSysDept.deptName = deptName01 search results for the query condition is A needs to query results, rather than B needs to query results unless B query, submitted tSysDept.deptName =, in order to empty the server records the value of tSysDept.deptName
why not ! ! ! ? ? ? ? ?
------ For reference only -------------------------------------- -
himself atop solving
------ For reference only ----------------------------- ----------
alas , the principle is struts2 thread safety issues , depressed, the configuration properties in the ACTION add scope = "prototype" on it
---- - For reference only ---------------------------------------
knot stickers, thread all scores
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