Search and Parse Keyword(1)JACKSON for JSON and Jsoup for URL Fetch-优快云博客

本文介绍了如何利用Jackson库将Java对象转换为JSON字符串，以及如何使用Jsoup库从指定URL中获取资源。通过Spring框架配置，实现了这两项操作的整合。同时，提供了依赖管理的示例，包括Jackson和Jsoup库的版本控制，以及如何在项目中引入这些依赖。

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Search and Parse Keyword(1)JACKSON for JSON and Jsoup for URL Fetch

1. Using jackson to mapping the JAVA Object and JSON
package com.sillycat.analyzerjava.service.impl;

import java.io.IOException;

import org.codehaus.jackson.JsonGenerationException;

import org.codehaus.jackson.map.JsonMappingException;

import org.codehaus.jackson.map.ObjectMapper;

import org.codehaus.jackson.map.annotate.JsonSerialize.Inclusion;

import com.sillycat.analyzerjava.service.JSONMapperHero;

/** * JSON mapper based on jackson *

* @author sillycat

public class JSONMapperHeroJacksonImpl<T> implements JSONMapperHero<T> {

private ObjectMapper jsonMapper;

/**

* will be called by spring framework

@SuppressWarnings("unused")

private void init() {

jsonMapper = new ObjectMapper();

jsonMapper.setSerializationInclusion(Inclusion.NON_NULL);

}

/**

* mapping the object to JSON String

public String toJSON(T objClass) {

try {

return jsonMapper.writeValueAsString(objClass);

} catch (JsonGenerationException e) {

e.printStackTrace();

} catch (JsonMappingException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

return null;

}

}

It is configured in Spring, so we can adjust it when we want.
<?xmlversion="1.0"encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns:aop="http://www.springframework.org/schema/aop"

xmlns:tx="http://www.springframework.org/schema/tx"

xmlns:context="http://www.springframework.org/schema/context"

xsi:schemaLocation="http://www.springframework.org/schema/

beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

http://www.springframework.org/schema/aop

http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx

http://www.springframework.org/schema/tx/spring-tx-3.0.xsd

http://www.springframework.org/schema/context

http://www.springframework.org/schema/context/spring-context-3.0.xsd">

<bean id="analyzerHero"

class="com.sillycat.analyzerjava.service.impl.AnalyzerHeroSingleRegexImpl"/> <bean id="resourceFetchHero"

class="com.sillycat.analyzerjava.service.impl.ResourceFetchHeroJsoupImpl" <bean id="jsonMapperHero"

class="com.sillycat.analyzerjava.service.impl.JSONMapperHeroJacksonImpl"

init-method="init"/>

</beans>

Dependencies in pom.xml
<properties>

<springframework.version>3.1.1.RELEASE</springframework.version>

<jackson.version>1.9.10</jackson.version>

</properties>

<dependency>

<groupId>org.codehaus.jackson</groupId>

<artifactId>jackson-core-asl</artifactId>

<version>${jackson.version}</version>

</dependency>

<groupId>org.codehaus.jackson</groupId>

<artifactId>jackson-mapper-asl</artifactId>

<version>${jackson.version}</version>

</dependency>

2. Jsoup to fetch URL Resource
package com.sillycat.analyzerjava.service.impl;

import java.io.IOException;

import org.jsoup.Jsoup;

import com.sillycat.analyzerjava.service.ResourceFetchHero;

import com.sillycat.analyzerjava.service.base.BaseHero;

public class ResourceFetchHeroJsoupImpl extends BaseHero implements ResourceFetchHero{

public String getTitlefromURL(String url) {

String result = null;

try {

log.debug("====================================");

log.debug("searching title for url:" + url);

result = Jsoup.connect(url).get().title();

log.debug("title:" + result);

log.debug("====================================");

} catch (IOException e) {

log.error("Exception:" + e);

}

returnresult;

}

}

Dependencies in pom.xml

<groupId>org.jsoup</groupId>

<artifactId>jsoup</artifactId>

</dependency>

The details are in project analyzerjava.

References:
http://www.cnblogs.com/chenssy/p/3751221.html
http://www.iteye.com/topic/336577
http://my.oschina.net/u/999578/blog/151791
http://blog.shilimin.com/298.htm
http://www.iteye.com/topic/1116520
http://gaojunwei.iteye.com/blog/1856753
http://www.zuidaima.com/share/1863323818724352.htm

Parse URL
http://dikar.iteye.com/blog/345486
http://pmghong.blog.51cto.com/3221425/1334086

PerfTest
http://www.ibm.com/developerworks/cn/java/j-cq11296.html
http://blog.youkuaiyun.com/emu/article/details/363405
http://www.bdqn.cn/news/201404/13763.shtml
http://sillycat.iteye.com/blog/736717

java yacc
http://byaccj.sourceforge.net/
http://tianya23.blog.51cto.com/1081650/633108

http://sillycat.iteye.com/blog/2076910
http://sillycat.iteye.com/blog/2101121

java analyzer
http://www.cnblogs.com/xuqiang/archive/2010/09/21/1953501.html
http://www.blogjava.net/qujinlong123/archive/2007/05/08/113773.html

guava cache
http://sillycat.iteye.com/blog/1889542

jsoup
http://www.mkyong.com/java/jsoup-html-parser-hello-world-examples/
http://jsoup.org/

json mapper
http://sillycat.iteye.com/blog/563970