spring boot整合 freemarker 详细教程

spring boot 我们都知道是一个简化配置的服务，省去繁琐的xml配置，以properties和yml还有 注解形式来替代之前的xml配置。

我们首先实现spring boot 对freemarker的支持，引入pom

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>

在yml中添加配置项：

spring:
freemarker:
template-loader-path: classpath:/ftl/

classpath后面为前缀。也可以在注解配置类中实现

新建配置类：FreeMarkerConfig.java

import com.jagregory.shiro.freemarker.ShiroTags;
import freemarker.template.TemplateException;
import freemarker.template.TemplateModelException;
import java.io.IOException;
import java.util.Properties;
import javax.annotation.PostConstruct;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.ui.freemarker.FreeMarkerConfigurationFactory;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer;
import org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver;
/**
* @author zhuxiaomeng
* @date 2018/1/2.
* @email 154040976@qq.com
*/
@Configuration
public class FreeMarkerConfig {

@Bean
public ViewResolver viewResolver() {
FreeMarkerViewResolver resolver = new FreeMarkerViewResolver();
resolver.setCache(false);
resolver.setViewClass(org.springframework.web.servlet.view.freemarker.FreeMarkerView.class);
resolver.setRequestContextAttribute("re");
resolver.setExposeSpringMacroHelpers(true);
resolver.setExposeRequestAttributes(true);
resolver.setExposeSessionAttributes(true);
resolver.setSuffix(".ftl");
resolver.setContentType("text/html; charset=UTF-8");
return resolver;
}

@Bean
public FreeMarkerConfigurer freemarkerConfig() throws IOException, TemplateException {
FreeMarkerConfigurationFactory factory = new FreeMarkerConfigurationFactory();
factory.setTemplateLoaderPaths("classpath:/ftl/", "src/main/resources/ftl");
factory.setDefaultEncoding("UTF-8");
FreeMarkerConfigurer result = new FreeMarkerConfigurer();

freemarker.template.Configuration configuration = factory.createConfiguration();
configuration.setClassicCompatible(true);
result.setConfiguration(configuration);
Properties settings = new Properties();
settings.put("template_update_delay", "0");
settings.put("default_encoding", "UTF-8");
settings.put("number_format", "0.##########");
settings.put("datetime_format", "yyyy-MM-dd HH:mm:ss");
settings.put("classic_compatible", true);
settings.put("template_exception_handler", "ignore");
result.setFreemarkerSettings(settings);
return result;
}

}

setRequestContextAttribute：设置属性名称，为freemarker前端 RequestContext 的别名

本人已经在开源框架lenos中实现，如果你感兴趣，或者需要帮助，可以下载学习：

地址：https://gitee.com/bweird/lenosp

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