Java tutorial
package org.dspace.webmvc.controller; import org.dspace.authorize.AuthorizeException; import org.dspace.core.ConfigurationManager; import org.dspace.core.Context; import org.dspace.core.I18nUtil; import org.dspace.webmvc.bind.annotation.RequestAttribute; import org.hibernate.validator.constraints.NotEmpty; import org.springframework.stereotype.Controller; import org.springframework.validation.BindingResult; import org.springframework.web.bind.annotation.ModelAttribute; import org.springframework.web.bind.annotation.RequestMapping; import javax.validation.Valid; @Controller public class LicenseEditController { @ModelAttribute("licenseForm") public LicenseForm createForm(Context context) { LicenseForm licenseForm = new LicenseForm(); licenseForm.setLicenseText(ConfigurationManager.getLicenseText(I18nUtil.getDefaultLicense(context))); return licenseForm; } @RequestMapping public String showForm(@RequestAttribute Context context, LicenseForm licenseForm) throws AuthorizeException { if (context == null || context.getCurrentUser() == null) { throw new AuthorizeException("Not Authorized to edit the license"); } return "pages/admin/license"; } @RequestMapping(params = "submit") public String processForm(@RequestAttribute Context context, @Valid LicenseForm licenseForm, BindingResult bindingResult) { if (!bindingResult.hasErrors()) { ConfigurationManager.writeLicenseFile(I18nUtil.getDefaultLicense(context), licenseForm.getLicenseText()); return "pages/admin/license-saved"; } return "pages/admin/license"; } public static class LicenseForm { @NotEmpty private String licenseText; public String getLicenseText() { return licenseText; } public void setLicenseText(String pLicenseText) { this.licenseText = pLicenseText; } } }