shiro+mybatis+springmvc例項記錄(二)——shiro支援ajax請求
阿新 • • 發佈:2019-01-27
接上文,頁面跳轉顯然不適合動靜分離ajax互動的架構模式,因此就需要對框架進行改造優化,使得後臺能夠返回json資料給前端請求。
自定義攔截器
shiro對許可權、使用者資訊的校驗實在預設的攔截器中進行的,要改寫資料返回方式,則需要重寫攔截器。這裡我們分別對authc,perms進行重寫。
分別定義兩個攔截器,並使用printWriter將json字串寫入response中。
LoginFilter
package com.testshiro.filter;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet .ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache .shiro.subject.Subject;
import org.apache.shiro.web.filter.authc.FormAuthenticationFilter;
//使用者登入校驗失敗回撥方法,也可以自己重寫校驗方法isAccessAllowed
@Override
protected boolean onAccessDenied(ServletRequest request,
ServletResponse response) throws Exception {
HttpServletRequest httpServletRequest = (HttpServletRequest) request;
HttpServletResponse httpServletResponse = (HttpServletResponse) response;
//設定編碼格式,header的content-type也要設定,否則瀏覽器不會以utf8解析,還是亂碼。設定application/json可以讓js不需要eval即可使用物件
httpServletResponse.setCharacterEncoding("UTF-8");
httpServletResponse.setHeader("Content-type",
"application/json;charset=UTF-8");
PrintWriter out;
try {
out = httpServletResponse.getWriter();
out.println("{\"code\":-1,\"msg\":\"未登入使用者!\"}");
out.flush();
out.close();
} catch (IOException e1) {
log.info(e1.getMessage());
}
return false;
}
@Override
protected boolean onLoginFailure(AuthenticationToken token,
AuthenticationException e, ServletRequest request,
ServletResponse response) {
HttpServletRequest httpServletRequest = (HttpServletRequest) request;
HttpServletResponse httpServletResponse = (HttpServletResponse) response;
httpServletResponse.setCharacterEncoding("UTF-8");
httpServletResponse.setHeader("Content-type",
"application/json;charset=UTF-8");
PrintWriter out;
try {
out = httpServletResponse.getWriter();
out.println("{\"code\":-1,\"msg\":\"系統錯誤\"}");
out.flush();
out.close();
} catch (IOException e1) {
log.info(e1.getMessage());
}
return false;
}
@Override
protected boolean onLoginSuccess(AuthenticationToken token,
Subject subject, ServletRequest request, ServletResponse response)
throws Exception {
return super.onLoginSuccess(token, subject, request, response);
}
private final static Logger log =
Logger.getLogger(LoginFilter.class);
}
PermsFilter
package com.testshiro.filter;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.subject.Subject;
import org.apache.shiro.web.filter.authz.PermissionsAuthorizationFilter;
public class PermsFilter extends PermissionsAuthorizationFilter {
private final static Logger log = Logger.getLogger(PermsFilter.class);
@Override
protected boolean onAccessDenied(ServletRequest arg0, ServletResponse arg1)
throws IOException {
HttpServletRequest httpServletRequest = (HttpServletRequest) arg0;
HttpServletResponse httpServletResponse = (HttpServletResponse) arg1;
httpServletResponse.setCharacterEncoding("UTF-8");
httpServletResponse.setHeader("Content-type",
"application/json;charset=UTF-8");
PrintWriter out;
try {
out = httpServletResponse.getWriter();
out.println("{\"code\":-1,\"msg\":\"登入使用者無權執行該操作!\"}");
out.flush();
out.close();
} catch (IOException e1) {
log.info(e1.getMessage());
}
return false;
}
}
接下來在配置檔案中配置自定義攔截器
spring-shiro.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-4.0.xsd"
>
<!-- Shiro Filter 攔截器相關配置 -->
<bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">
<!-- securityManager -->
<property name="securityManager" ref="securityManager" />
<property name="loginUrl" value="/login.jsp" />
<property name="unauthorizedUrl" value="/403.jsp" />
<property name="filters">
<util:map>
<entry key="authc" value-ref="loginFilter"/>
<entry key="perms" value-ref="authoFilter"/>
</util:map>
</property>
<!-- 過濾鏈定義 -->
<property name="filterChainDefinitions">
<value>
/data/sysaccount/login*=anon
/data/sysaccount/**=authc,perms[sysAccount]
/data/sysautho/**=authc,perms[sysAutho]
/data/sysrole/**=authc,perms[sysRole]
</value>
</property>
</bean>
<bean id="loginFilter" class="com.testshiro.filter.LoginFilter"/>
<bean id="authoFilter" class="com.testshiro.filter.PermsFilter"/>
<!-- securityManager -->
<bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
<property name="realm" ref="myRealm" />
</bean>
<!-- 自定義Realm實現 -->
<bean id="myRealm" class="com.testshiro.realm.CustomRealm" />
<bean id="lifecycleBeanPostProcessor" class="org.apache.shiro.spring.LifecycleBeanPostProcessor" />
</beans>
啟動伺服器即可。
js頁面部分程式碼
.ajax({
url : xxxx,
type : "GET",
success : function(data) {
if("code" in data&&data.code==-1){
alert(data.msg);
return;
}
}
})
......
執行效果
未登入情況: