If you want to verify the user's input, the light uses client authentication is not insurance, the client may skip the input page, send a request to the server directly, if the servo end does not verify the request, it will cause errors. To verify using the Validator servo, just inherit the org.apache.struts.validator.validatorform category to write an actionform, ValidatorForm is the subcategory of ActionForm, which redefines the validate () method, defining the category using the Validatorform defined, The setting in Validation.xml is the same as the previous topic. ActionServlet calls the Validate () method. If the verification is incorrect, the related error message will be collected and stored in the ActionerRRORS. You want to specify the TYPE property of the actionMApping in Struts-Config.xml, provide a message page, Use the tag in the among the , for example:
Code:
Code: <% @ taglib URI = "/ tags / struts-bean" prefix = "bean"%> <% @ taglib URI = "/ tags / struts-html" prefix = "html"%> <% @ page contenttype = "Text / html; charset = BIG5"%> <bean: message key = "welcome.title" /> </ title> <html: base /> </ head> < Body BGColor = "White"> <html: errors /> <html: form action = "/ loginaction" FOCUS = "name"> Name: <html: text protety = "name" size = "20" /> <br> Email: <html: text proteth = "email" size = "20" /> <html: reset /> </ html: form> </ body> </ html: html> Validator It also provides a subcategory DynavalidatorForm for DynaActionForm, and you can automatically generate an ActionForm object to automatically generate an ActionForm object in Struct-Config.xml, and have verification capabilities, for example:</p>
<p>Code: <form-beans> <form-bean name = "userform" type = "org.apache.struts.validator.dynavalidatorform"> <form-property name = "name" type = "java.lang.string" initial = "nobody" /> <formerty name = "email" type = "java.lang.string" initial = "nobody@mail.com" /> </ form-bean> </ form-beans></p></div><div class="text-center mt-3 text-grey">
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