Groovy 2 Cookbook电子书

Groovy 2 Cookbook

Table of Contents

Groovy 2 Cookbook

Credits

About the Authors

About the Reviewers

www.PacktPub.com

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Preface

The Groovy language

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the example code

Errata

Piracy

Questions

1. Getting Started with Groovy

Introduction

Installing Groovy on Windows

Getting ready

How to do it…

There's more...

Installing Groovy on Linux and OS X

How to do it...

How it works...

There's more...

See also

Executing Groovy code from the command line

How to do it...

How it works...

There's more...

See also

Using Groovy as a command-line text file editor

How to do it...

How it works...

There's more...

See also

Using Groovy to start a server on the command line

How to do it...

See also

Running Groovy with invokedynamic support

Getting ready

How to do it...

There's more...

See also

Building Groovy from source

Getting ready

How to do it...

How it works...

Managing multiple Groovy installations on Linux

Getting ready

How to do it...

How it works...

There's more...

See also

Using groovysh to try out Groovy commands

How to do it...

How it works...

There's more...

Starting groovyConsole to execute Groovy snippets

How to do it...

There's more...

Configuring Groovy in Eclipse

Getting ready

How to do it...

How it works...

There's more...

See also

Configuring Groovy in IntelliJ IDEA

Getting ready

How to do it...

There's more...

2. Using Groovy Ecosystem

Introduction

Using Java classes from Groovy

How to do it...

How it works...

There's more...

See also

Embedding Groovy into Java

Getting ready

How to do it...

How it works...

There's more...

See also

Compiling Groovy code

Getting ready

How to do it...

How it works...

See also

Simplifying dependency management with Grape

Getting ready

How to do it...

How it works...

There's more...

See also

Integrating Groovy into the build process using Ant

Getting ready

How to do it...

How it works...

There's more...

See also

Integrating Groovy into the build process using Maven

Getting ready

How to do it...

How it works...

There's more...

See also

Integrating Groovy into the build process using Gradle

Getting ready

How to do it...

How it works...

There's more...

See also

Generating documentation for Groovy code

Getting ready

How to do it...

How it works...

There's more...

See also

Checking Groovy code's quality with CodeNarc

Getting ready

How to do it...

How it works...

There's more...

See also

3. Using Groovy Language Features

Introduction

Searching strings with regular expressions

Getting ready

How to do it...

There's more...

See also

Writing less verbose Java Beans with Groovy Beans

Getting ready

How to do it...

How it works...

There's more...

Inheriting constructors in Groovy classes

How to do it...

How it works...

Adding the cloning functionality to Groovy Beans

How to do it...

How it works...

There's more...

Defining code as data in Groovy

Getting ready

How to do it...

There's more...

Defining data structures as code in Groovy

Getting ready

How to do it...

How it works...

See also

Implementing multiple inheritance in Groovy

Getting ready

How to do it...

How it works...

There's more...

See also

Adding a functionality to the existing Java/Groovy classes

Getting ready

How to do it...

How it works...

There's more...

See also

Defining type-checking rules for dynamic code

Getting ready

How to do it...

How it works...

There's more...

Adding automatic logging to Groovy classes

How to do it...

How it works...

There's more...

See also

4. Working with Files in Groovy

Introduction

Reading from a file

Getting ready

How to do it...

How it works...

There's more...

See also

Reading a text file line by line

Getting ready

How to do it...

There's more...

See also

Processing every word in a text file

Getting ready

How to do it...

How it works...

There's more...

See also

Writing to a file

Getting ready

How to do it...

How it works...

There's more...

See also

Replacing tabs with spaces in a text file

Getting ready

How to do it...

How it works...

There's more...

See also

Filtering a text file's content

Getting ready

How to do it...

How it works...

There's more...

See also

Deleting a file or directory

Getting ready

How to do it...

How it works...

There's more...

See also

Walking through a directory recursively

Getting ready

How to do it...

How it works...

There's more...

See also

Searching for files

Getting ready

How to do it...

How it works...

There's more...

See also

Changing file attributes on Windows

Getting ready

How to do it...

How it works...

There's more...

Reading data from a ZIP file

Getting ready

How to do it...

How it works...

There's more...

See also

Reading an Excel file

Getting ready

How to do it...

How it works...

See also

Extracting data from a PDF

Getting ready

How to do it...

How it works...

There's more...

See also

5. Working with XML in Groovy

Introduction

Reading XML using XmlSlurper

Getting ready

How to do it...

How it works...

See also

Reading XML using XmlParser

How to do it...

How it works...

See also

Reading XML content with namespaces

Getting ready

How to do it...

How it works...

There's more...

See also

Searching in XML with GPath

Getting ready

How to do it...

How it works...

There's more...

See also

Searching in XML with XPath

Getting ready

How to do it...

How it works...

There's more...

See also

Constructing XML content

How to do it...

How it works...

There's more...

See also

Modifying XML content

Getting ready

How to do it...

How it works...

See also

Sorting XML nodes

How to do it...

How it works...

There's more...

See also

Serializing Groovy Beans to XML

Getting ready

How to do it...

How it works...

There's more...

See also

6. Working with JSON in Groovy

Introduction

Parsing JSON messages with JsonSlurper

Getting ready

How to do it...

How it works...

There's more...

See also

Constructing JSON messages with JsonBuilder

How to do it...

How it works...

See also

Modifying JSON messages

How to do it...

How it works...

See also

Validating JSON messages

Getting ready

How to do it...

How it works...

There's more...

See also

Converting JSON message to XML

Getting ready

How to do it...

How it works...

There's more...

See also

Converting JSON message to Groovy Bean

Getting ready

How to do it...

How it works...

There's more...

See also

Using JSON to configure your scripts

Getting ready

How to do it...

How it works...

There's more...

See also

7. Working with Databases in Groovy

Introduction

Creating a database table

Getting ready

How to do it...

How it works...

See also

Connecting to an SQL database

Getting ready

How to do it...

How it works...

See also

Querying an SQL database

Getting ready

How to do it...

How it works...

There's more...

See also

Modifying data in an SQL database

Getting ready

How to do it...

How it works...

There's more...

See also

Calling a stored procedure

Getting ready

How to do it...

How it works...

There's more...

See also

Reading BLOB/CLOB from a database

Getting ready

How to do it...

How it works...

There's more...

See also

Building a simple ORM framework

Getting ready

How to do it...

How it works...

There's more...

See also

Using Groovy to access Redis

Getting ready

How to do it...

How it works...

There's more...

See also

Using Groovy to access MongoDB

Getting ready

How to do it...

How it works...

There's more...

See also

Using Groovy to access Apache Cassandra

Getting ready

How to do it...

How it works...

See also

8. Working with Web Services in Groovy

Introduction

Downloading content from the Internet

How to do it...

How it works...

There's more...

See also

Executing an HTTP GET request

How to do it...

How it works...

There's more...

See also

Executing an HTTP POST request

How to do it...

How it works...

There's more...

See also

Constructing and modifying complex URLs

How to do it...

How it works...

See also

Issuing a REST request and parsing a response

Getting ready

How to do it...

How it works...

See also

Issuing a SOAP request and parsing a response

Getting ready

How to do it...

How it works...

There's more...

See also

Consuming RSS and Atom feeds

Getting ready

How to do it...

How it works...

There's more...

See also

Using basic authentication for web service security

How to do it...

How it works...

See also

Using OAuth for web service security

Getting ready

How to do it...

How it works...

See also

9. Metaprogramming and DSLs in Groovy

Introduction

Querying methods and properties

Getting ready

How to do it...

How it works...

See also

Dynamically extending classes with new methods

How to do it...

How it works...

There's more...

See also

Overriding methods dynamically

Getting ready

How to do it...

How it works...

Adding performance logging to methods

Getting ready

How to do it...

How it works...

There's more...

See also

Adding a caching functionality around methods

Getting ready

How to do it...

How it works...

See also

Adding transparent imports to a script

Getting ready

How to do it...

How it works...

There's more...

See also

DSL for executing commands over SSH

Getting ready

How to do it...

How it works...

See also

DSL for generating reports from logfiles

Getting ready

How to do it...

How it works...

There's more...

10. Concurrent Programming in Groovy

Introduction

Processing collections concurrently

Getting ready

How to do it...

How it works...

There's more...

See also

Downloading files concurrently

Getting ready

How to do it...

How it works...

See also

Splitting a large task into smaller parallel jobs

How to do it...

How it works...

See also

Running tasks in parallel and asynchronously

Getting ready

How to do it...

How it works...

See also

Using actors to build message-based concurrency

How to do it...

How it works...

See also

Using STM to atomically update fields

Getting ready

How to do it...

How it works...

There's more...

See also

Using dataflow variables for lazy evaluation

Getting ready

How to do it...

How it works...

There's more...

See also

Index