Spring Security 3-如何自定义用户名/密码参数？

Question

使用<http ... />Spring Security 3命名空间时如何自定义UsernamePasswordAuthenticationFilter usernameParameter(j_username)和passwordParameter(j_password)属性？据我了解，<http ... /> 创建了过滤器，但我不知道如何自定义它。

Answer 1

这是我根据 axtavt 的建议创建的解决方案：

弹簧配置：

<beans:bean id="userPassAuthFilterBeanPostProcessor"
    class="com.my.package.UserPassAuthFilterBeanPostProcessor">
    <beans:property name="usernameParameter" value="username" />
    <beans:property name="passwordParameter" value="password" />
</beans:bean>

Java 类：

package com.my.package;

import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.security.web.authentication.
    UsernamePasswordAuthenticationFilter;

public class UserPassAuthFilterBeanPostProcessor implements BeanPostProcessor {

    private String usernameParameter;
    private String passwordParameter;

    @Override
    public final Object postProcessAfterInitialization(final Object bean,
        final String beanName) {
        return bean;
    }

    @Override
    public final Object postProcessBeforeInitialization(final Object bean,
        final String beanName) {
        if (bean instanceof UsernamePasswordAuthenticationFilter) {
            final UsernamePasswordAuthenticationFilter filter =
                (UsernamePasswordAuthenticationFilter) bean;
            filter.setUsernameParameter(getUsernameParameter());
            filter.setPasswordParameter(getPasswordParameter());
        }

        return bean;
    }

    public final void setUsernameParameter(final String usernameParameter) {
        this.usernameParameter = usernameParameter;
    }

    public final String getUsernameParameter() {
        return usernameParameter;
    }

    public final void setPasswordParameter(final String passwordParameter) {
        this.passwordParameter = passwordParameter;
    }

    public final String getPasswordParameter() {
        return passwordParameter;
    }

}

Answer 2

过滤器是使用form-login 元素配置的，但该元素不提供为用户名和密码设置自定义名称的功能。

您可以直接配置，如Spring Reference中所述